If Else Statement in C Language

Updated on May 31, 2025 | By Learnzy Academy

The if...else statement in C is used to make decisions based on conditions. It allows the program to execute different blocks of code depending on whether a condition is true or false.

Example - 

if (condition) {
    // Code to execute if the condition is true
} else {
    // Code to execute if the condition is false
}
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List of question on "If Else Statement"

  1. Use nested if to check if a triangle is equilateral, isosceles, or scalene.
  2. Check if a person can vote and also check if they are a senior citizen using nested if.
  3. Find Largest of Three Numbers using nested if
  4. Check if a number is positive, negative, or zero, and even/odd if positive.
  5. How to create BMI (Body Mass Index) Checker in C language ?
  6. Program in C to Check whether a year is a century year or not
  7. Program in C to Find the largest number among three numbers.
  8. Write a program in C to Check whether a character is uppercase or lowercase.
  9. Write a program in C to Check whether a number is divisible by 5 and 11
  10. Program in C to Check the type of character (Alphabet, Digit, Special).
  11. Grading System Based on Marks.
  12. Program in C to Check whether a year is a leap year or not.
  13. Write a program in C to Check if a person is eligible to vote by checking his or her age.
  14. Find the largest of two numbers entered by the user.
  15. Check if a number is positive or negative.
  16. Check if a given Number is Even or Odd.