C program using if statements

The if But sometimes you need to choose between three or more possibilities. As you can see, a second if If x is less than 0, then sign is set to However, if x is not less than 0, the second if There, if x is equal to 0, sign is also set to 0. But if x is greater than 0, sign is instead set to 1. Rather than a nested if It's also inefficient — every time the code runs, all three conditions are tested, even if one or two don't have to be.

Consider the following:. If the condition for the if statement evaluates to false, the condition for the else If that condition evaluates to true, the code inside the else We might want a bit of code to run if something is not true, or if two things are true. For that we have logical operators:. C language yes or no if statement with a char?

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Video: C if else Statement. If the test expression is evaluated to true, statements inside the body of if are executed. If the test expression is evaluated to false, statements inside the body of if are not executed. Working of if Statement To learn more about when test expression is evaluated to true non-zero value and false 0 , check relational and logical operators. The if statement is easy. Output 2 Enter an integer: 5 The if statement is easy. If the test expression is evaluated to false, statements inside the body of else are executed statements inside the body of if are skipped from execution.