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C > If Else and Switch Case Code Examples

if...else statement - check whether an integer entered by the user is odd or even

if...else statement - check whether an integer entered by the user is odd or even

The if...else statement executes some code if the test expression is true (nonzero) and some other code if the test expression is false (0).
Syntax of if...else

if (testExpression) {
    // codes inside the body of if
}
else {
    // codes inside the body of else
}

If test expression is true, codes inside the body of if statement is executed and, codes inside the body of else statement is skipped.

If test expression is false, codes inside the body of else statement is executed and, codes inside the body of if statement is skipped.

// Program to check whether an integer entered by the user is odd or even

#include <stdio.h>
int main()
{
    int number;
    printf("Enter an integer: ");
    scanf("%d",&number);

    // True if remainder is 0
    if( number%2 == 0 )
        printf("%d is an even integer.",number);
    else
        printf("%d is an odd integer.",number);
    return 0;
}

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