JavaScript: Find the sign of product of three numbers

JavaScript Conditional Statement and loops: Exercise-2 with Solution

Sign of Product of Three Numbers

Write a JavaScript conditional statement to find the sign of the product of three numbers. Display an alert box with the specified sign.

Sample numbers : 3, -7, 2
Output : The sign is -

Sample Solution-1:

JavaScript Code:

// Assigning values to variables
var x = 3;
var y = -7;
var z = 2;
// Checking different conditions based on the signs of x, y, and z
if (x> 0 && y> 0 && z> 0) {
 alert("The sign is +");
} else if (x < 0 && y < 0 && z < 0) { console.log("The sign is -"); } else if (x> 0 && y < 0 && z < 0) { console.log("The sign is +"); } else if (x < 0 && y> 0 && z < 0) { console.log("The sign is +"); } else { console.log("The sign is -"); } 

Output:

The sign is -

Flowchart:

Live Demo:

See the Pen javascript-conditional-statements-and-loops-exercise-2 by w3resource (@w3resource) on CodePen.

Sample Solution-2:

JavaScript Code:

// Assigning values to variables
var x = 3;
var y = -7;
var z = 2;
// Function to determine the sign based on the input value
function getSign(value) {
 if (value> 0) {
 return "+";
 } else if (value < 0) { return "-"; } else { return "zero"; } } // Checking the sign for each variable var signX = getSign(x); var signY = getSign(y); var signZ = getSign(z); // Determining the overall sign based on individual signs var overallSign = (signX === signY && signY === signZ) ? "+" : "-"; // Displaying the result console.log("The sign is " + overallSign); 

Output:

The sign is -

Flowchart:

For more Practice: Solve these Related Problems:

• Write a JavaScript function that determines the sign of the product of three numbers without multiplying them directly.
• Write a JavaScript function that uses logical operators to deduce the sign of the product of three numbers, including handling zeros.
• Write a JavaScript function that calculates the sign of the product by checking the number of negative inputs without performing multiplication.
• Write a JavaScript function that determines whether the product of three numbers is positive, negative, or zero using bitwise operations.

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