Nested if-else

It is possible to include an if...else statement inside the body of another if...else statement.

Example 4: Nested if…else

This program given below relates two integers using either <, > and = similar to the if...else ladder’s example. However, we will use a nested if...else statement to solve this problem.

#include <stdio.h>
int main() {
    int number1, number2;
    printf("Enter two integers: ");
    scanf("%d %d", &number1, &number2);

    if (number1 >= number2) {
      if (number1 == number2) {
        printf("Result: %d = %d",number1,number2);
      }
      else {
        printf("Result: %d > %d", number1, number2);
      }
    }
    else {
        printf("Result: %d < %d",number1, number2);
    }

    return 0;
}

If the body of an if...else statement has only one statement, you do not need to use brackets {}.

For example, this code

if (a > b) {
    printf("Hello");
}
printf("Hi");

is equivalent to

if (a > b)
    printf("Hello");
printf("Hi");