Language Ccpp Cref Examples FUNC_POINT3.C

 
/************************************************************************
 *
 * Purpose: 1. Define a pointer to a function with parameters.
 * 2. Point at the function.
 * 3. Execute the function passing char and string parameters to it.
 *
 * Author: M.J. Leslie
 *
 * Date: 04-Jun-95
 *
 ************************************************************************/
char * (*fpointer)(char *, char);	/* Define a pointer to a function	*/
char * prefix(char *, char);		/* Define a few functions.		*/
char * suffix(char *, char);
main()
 {
 fpointer =index.html prefix;		/* Put the address of 'add' in 'fpointer' */
 printf("%s ", fpointer("artin", 'M'));	
 fpointer = suffix;		/* Repeat for 'suffix'			*/
 printf("%s \n", fpointer("lesli", 'e'));
 }
/************************************************************************/
char * prefix(char *str, char c)
 {
 char result[100];
 
 result[0] = c;
 strcpy(result+1, str);
 return(result);
 }
/************************************************************************/
char * suffix(char *str, char c)
 {
 char result[100];
 int eol;
 strcpy(result, str);
 eol=strlen(result);
 result[eol] = c;
 result[eol+1] = '0円';
 return(result);
 }

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