Else Statement ❔

What if you wanted to also check if the condition wasn’t satisfied in an if statement? You may assume we would have to write out two if statements, like:

int condition = 0;

if (condition) {

}

if (!condition) {

}

However you can actual use the else statement instead:

int condition = 0;

if (condition) {

} else {

}

You can also chain together else if to check for multiple conditions in one if statement chain.

int condition = 0;
int other_condition = 1;
int another_condition = 0;

if (condition) {

} else if (other_condition) {

} else if (another_condition) {

}

Note that you can only add the else at the very end of an if statement chain.

int condition = 0;
int other_condition = 1;

if (condition) {

} else if (other_condition) {

} else {

}

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Tasks 🎯

Write a program that asks a person for their favorite number.

• If the number is greater than 0, print “Your number is positive!”.

• If the number is less than 0, print “Your number is negative!”.

• If the number is equal to zero, print “Your number is neither positive nor negative, so it must be zero then!”.

  Solution ✅

  #include <stdio.h>
  
  int main() {
      int favorite_number = 0;
      printf("What is your favorite number?\n");
      scanf("%d", &favorite_number);
      if (favorite_number > 0) {
          printf("Your number is positive!\n");
      } else if (favorite_number < 0) {
          printf("Your number is negative!\n");
      } else {
          printf("Your number is neither positive nor negative, so it must be zero then!\n");
      }
      return 0;
  }