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Commit 9c7a088

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Exercise 27.13; Exercise 27.14
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‎Chapter_27/C27_Exercise_27.13.cpp

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/* Exercise 27.13 */
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#include<stdio.h>
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#include<stdbool.h>
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#include<stdlib.h>
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#include<string.h>
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#include<ctype.h>
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#include"C27_Exercise_27.13.h"
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int main()
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{
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enum Action {
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EXIT = -1, PRINTACTIONLIST,
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CASE1, CASE2, CASE3, CASE4, CASE5, CASE6, CASE7, CASE8, CASE9, CASE10
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};
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const char* actionList = "\tList of actions:\n"
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" (1) Read string\n"
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" (-1) Exit, (0) Print the list of actions\n\n";
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printf("%s", actionList);
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int action;
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bool cond = true;
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while (cond) {
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printf("\nPlease enter the action: ");
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int ret = scanf("%d", &action);
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char ch;
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while ((ch = getchar()) != '\n');
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if (ret <= 0) {
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printf("\n\n\t\tError. Incorrect input\n");
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continue;
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}
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switch (action) {
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case CASE1: {
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putchar('\n');
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FILE* pOut;
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pOut = fopen("C27_Exercise_27.13.txt", "w");
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if (pOut == NULL) break;
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String s;
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Initialize(&s, 5);
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printf("Enter a string (press ENTER -> CONTROL+Z -> ENTER to end input):\n");
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while (GetString(stdin, &s)) {
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fprintf(pOut, "%s\n", s.str);
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}
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Destroy(&s);
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fclose(pOut);
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putchar('\n');
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break;
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}
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case PRINTACTIONLIST:
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printf("%s", actionList);
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break;
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case EXIT:
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cond = false;
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break;
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default:
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printf("\t\tError. Incorrect action number\n");
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break;
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}
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}
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return SUCCESS;
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}
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void PrintError(const char* message)
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{
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fprintf(stderr, "\t\tError -> ");
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fprintf(stderr, message);
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fprintf(stderr, "\n");
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}
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bool Initialize(String* string, size_t size)
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{
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if (string == NULL) {
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PrintError("Initialize(): arg1 == NULL");
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return false;
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}
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if (size == 0) {
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PrintError("Initialize(): arg2 == 0");
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return false;
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}
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string->str = (char*)malloc(sizeof(char) * size);
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if (string->str == NULL) {
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PrintError("Initialize(): no memory allocated");
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return false;
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}
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string->sz = 0;
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string->maxsz = size;
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return true;
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}
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bool Extend(String* string)
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{
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if (string == NULL) {
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PrintError("Extend(): arg1 == NULL");
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return false;
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}
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char* newBlock = (char*)realloc(string->str, sizeof(char) * string->maxsz * EXTENDMULTIPLIER);
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if (newBlock == NULL) {
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PrintError("Extend(): no memory reallocated");
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return false;
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}
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string->str = newBlock;
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string->maxsz *= EXTENDMULTIPLIER;
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return true;
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}
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bool Destroy(String* string)
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{
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if (string == NULL) {
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PrintError("Destroy(): arg1 == NULL");
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return false;
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}
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free(string->str);
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string->str = NULL;
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string->sz = string->maxsz = 0;
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return true;
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}
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bool GetString(FILE* stream, String* string)
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{
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if (string == NULL) {
121+
PrintError("GetString(): arg1 == NULL");
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return false;
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}
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if (feof(stream)) return false;
125+
int c;
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while (true) {
127+
c = getc(stream);
128+
if (c == EOF) return false;
129+
if (isspace(c) == false) {
130+
ungetc(c, stream);
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break;
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}
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}
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string->sz = 0;
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string->str[string->sz] = '0円';
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while (true) {
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c = getc(stream);
138+
if (string->sz == string->maxsz) {
139+
if (Extend(string) == false) {
140+
ungetc(c, stream);
141+
ungetc(string->str[--string->sz], stream);
142+
string->str[string->sz] = '0円';
143+
return false;
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}
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}
146+
if (isspace(c)) {
147+
string->str[string->sz++] = '0円';
148+
return true;
149+
}
150+
string->str[string->sz++] = c;
151+
}
152+
}

‎Chapter_27/C27_Exercise_27.13.h

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/* Exercise 27.13 */
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#ifndef C27_Exercise_27_13_H
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#define C27_Exercise_27_13_H
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#define EXTENDMULTIPLIER 2
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8+
enum ReturnTypeCommon { FAILURE = -1, SUCCESS };
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const char* sp_2 = " ";
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const char* sp_4 = " ";
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const char* sp_6 = " ";
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const char* sp_8 = " ";
14+
const char* vsp_2 = "\n\n";
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const char* vsp_3 = "\n\n\n";
16+
const char* vsp_4 = "\n\n\n\n";
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18+
typedef struct StructString {
19+
char* str;
20+
int sz;
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int maxsz;
22+
} String;
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24+
void PrintError(const char* message);
25+
bool Initialize(String* string, size_t size);
26+
bool Extend(String* string);
27+
bool Destroy(String* string);
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bool GetString(FILE* stream, String* string);
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30+
#endif

‎Chapter_27/C27_Exercise_27.14.cpp

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/* Exercise 27.14 */
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#include<stdio.h>
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#include<stdbool.h>
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#include<stdlib.h>
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#include<string.h>
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#include<ctype.h>
8+
#include"C27_Exercise_27.14.h"
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10+
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int main()
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{
13+
enum Action {
14+
EXIT = -1, PRINTACTIONLIST,
15+
CASE1, CASE2, CASE3, CASE4, CASE5, CASE6, CASE7, CASE8, CASE9, CASE10
16+
};
17+
const char* actionList = "\tList of actions:\n"
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" (1) LargestSmallestMedianMean()\n"
19+
" (-1) Exit, (0) Print the list of actions\n\n";
20+
printf("%s", actionList);
21+
int action;
22+
bool cond = true;
23+
while (cond) {
24+
printf("\nPlease enter the action: ");
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int ret = scanf("%d", &action);
26+
char ch;
27+
while ((ch = getchar()) != '\n');
28+
if (ret <= 0) {
29+
printf("\n\n\t\tError. Incorrect input\n");
30+
continue;
31+
}
32+
switch (action) {
33+
case CASE1: {
34+
putchar('\n');
35+
printf("\nPlease enter size of array: ");
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int size;
37+
if (scanf("%d", &size) <= 0 || size <= 0) {
38+
PrintError("Incorrect input");
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break;
40+
}
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int* arr = (int*)malloc(sizeof(int) * size);
42+
if (arr == NULL) {
43+
PrintError("No memory reallocated");
44+
break;
45+
}
46+
bool proceed = true;
47+
for (int i = 0; i < size; ++i) {
48+
printf("Please enter a number #%d: ", i + 1);
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int number;
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if (scanf("%d", &number) <= 0) {
51+
PrintError("Incorrect input");
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proceed = false;
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break;
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}
55+
arr[i] = number;
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}
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Value* pval = LargestSmallestMedianMean(arr, size);
58+
if (pval == NULL) break;
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printf("Largest: %d\n", pval->largest);
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printf("Smallest: %d\n", pval->smallest);
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printf("Median: %f\n", pval->median);
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printf("Mean: %f\n", pval->mean);
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putchar('\n');
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break;
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}
67+
case PRINTACTIONLIST:
68+
printf("%s", actionList);
69+
break;
70+
case EXIT:
71+
cond = false;
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break;
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default:
74+
printf("\t\tError. Incorrect action number\n");
75+
break;
76+
}
77+
}
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return SUCCESS;
79+
}
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81+
void PrintError(const char* message)
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{
83+
fprintf(stderr, "\t\tError -> ");
84+
fprintf(stderr, message);
85+
fprintf(stderr, "\n");
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}
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88+
Value* LargestSmallestMedianMean(int* arr, size_t size)
89+
{
90+
if (arr == NULL) {
91+
PrintError("LargestSmallestMedianMean(): arg1 == NULL");
92+
return NULL;
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}
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Value* pval = (Value*)malloc(sizeof(Value));
95+
if (pval == NULL) {
96+
PrintError("LargestSmallestMedianMean(): no memory reallocated");
97+
return NULL;
98+
}
99+
qsort(arr, size, sizeof(int), CompareInt);
100+
pval->largest = arr[size - 1];
101+
pval->smallest = arr[0];
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if (size % 2) {
103+
pval->median = arr[size / 2];
104+
}
105+
else {
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pval->median = (arr[size / 2 - 1] + arr[size / 2]) / 2;
107+
}
108+
pval->mean = 0.0;
109+
for (int i = 0; i < size; ++i) {
110+
pval->mean += arr[i];
111+
}
112+
pval->mean /= size;
113+
return pval;
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}
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int CompareInt(const void* a, const void* b)
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{
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return (*(int*)a - *(int*)b);
119+
}

‎Chapter_27/C27_Exercise_27.14.h

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/* Exercise 27.14 */
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#ifndef C27_Exercise_27_14_H
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#define C27_Exercise_27_14_H
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enum ReturnTypeCommon { FAILURE = -1, SUCCESS };
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const char* sp_2 = " ";
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const char* sp_4 = " ";
10+
const char* sp_6 = " ";
11+
const char* sp_8 = " ";
12+
const char* vsp_2 = "\n\n";
13+
const char* vsp_3 = "\n\n\n";
14+
const char* vsp_4 = "\n\n\n\n";
15+
16+
typedef struct StructValue {
17+
int largest;
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int smallest;
19+
double median;
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double mean;
21+
} Value;
22+
23+
void PrintError(const char* message);
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Value* LargestSmallestMedianMean(int* arr, size_t size);
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int CompareInt(const void* a, const void* b);
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#endif

‎Chapter_27/CMakeLists.txt

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@@ -29,6 +29,10 @@ set (FILE_NAME7 C27_Exercise_27.9)
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set (SOURCE_CXX_LIST7 ${FILE_NAME7}.cpp)
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set (FILE_NAME8 C27_Exercise_27.12)
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set (SOURCE_CXX_LIST8 ${FILE_NAME8}.cpp)
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set (FILE_NAME9 C27_Exercise_27.13)
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set (SOURCE_CXX_LIST9 ${FILE_NAME9}.cpp)
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set (FILE_NAME10 C27_Exercise_27.14)
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set (SOURCE_CXX_LIST10 ${FILE_NAME10}.cpp)
3236

3337

3438
# Add source to this project's executable.
@@ -40,6 +44,8 @@ add_executable (${FILE_NAME5} ${SOURCE_CXX_LIST5})
4044
add_executable (${FILE_NAME6} ${SOURCE_CXX_LIST6})
4145
add_executable (${FILE_NAME7} ${SOURCE_CXX_LIST7})
4246
add_executable (${FILE_NAME8} ${SOURCE_CXX_LIST8})
47+
add_executable (${FILE_NAME9} ${SOURCE_CXX_LIST9})
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add_executable (${FILE_NAME10} ${SOURCE_CXX_LIST10})
4349

4450
if (${COMPILE_AS_C})
4551
target_compile_options(${FILE_NAME} PRIVATE "/TC")
@@ -49,6 +55,8 @@ target_compile_options(${FILE_NAME5} PRIVATE "/TC")
4955
target_compile_options(${FILE_NAME6} PRIVATE "/TC")
5056
target_compile_options(${FILE_NAME7} PRIVATE "/TC")
5157
target_compile_options(${FILE_NAME8} PRIVATE "/TC")
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target_compile_options(${FILE_NAME9} PRIVATE "/TC")
59+
target_compile_options(${FILE_NAME10} PRIVATE "/TC")
5260
endif()
5361

5462
# TODO: Add tests and install targets if needed.
@@ -68,3 +76,7 @@ install (TARGETS ${FILE_NAME7} CONFIGURATIONS Debug DESTINATION Build/Debug)
6876
install (TARGETS ${FILE_NAME7} CONFIGURATIONS Release DESTINATION Build)
6977
install (TARGETS ${FILE_NAME8} CONFIGURATIONS Debug DESTINATION Build/Debug)
7078
install (TARGETS ${FILE_NAME8} CONFIGURATIONS Release DESTINATION Build)
79+
install (TARGETS ${FILE_NAME9} CONFIGURATIONS Debug DESTINATION Build/Debug)
80+
install (TARGETS ${FILE_NAME9} CONFIGURATIONS Release DESTINATION Build)
81+
install (TARGETS ${FILE_NAME10} CONFIGURATIONS Debug DESTINATION Build/Debug)
82+
install (TARGETS ${FILE_NAME10} CONFIGURATIONS Release DESTINATION Build)

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