C Programming if else Program | programming-point.com

Here we covered C programming if else program, like year is leap year or not, number is even or odd, mini projects like calculating electricity bill, finding grade of a student, etc., which will help the learner to learn the C programming language very easily. We can also provide PDF format to download that C program. To know What is C programming language?

C Programming if-else Program (PDF)

C Programming if-else Program Download (PDF)

Following are the list of C programming if-else program:

Table of Content

Check whether a number is Even or Odd.

Find the Largest of Two Numbers.

Check year is Leap year or not.

Check whether number is Positive or Negative.

Find Grade of a Student.

Calculate Profit or Loss in a Company.

Calculate Electricity Bill.

Calculate Gross Salary of an Employee.

Find a Number which is divided by 5 and 11.

Check character is Alphabet or Digit.

Check character is Vowel or Consonant.

Create a Menu System like [1] Add, [2] Edit, [3] Delete, [4] Exit.

1. Check whether a number is Even or Odd.

Program
#include<stdio.h>
void main() 
{
  int num;
  printf("Enter an Integer Value = ");
  scanf("%d", &num);
  if (num%2 == 0) 
    printf("%d is Even Number \n", num);
  else
    printf("%d is Odd Number \n", num);
}

Output
Enter an Integer Value = 65
65 is Odd Number

2. Find the Largest of Two Numbers.

Program
#include<stdio.h>
void main() 
{
  int a, b;  
  printf("Enter Two Integer Value = ");  
  scanf("%d %d", &a, &b);  
  if(a>b) 
  {
    printf("%d is Largest\n", a);          
  } 
  else if(b>a)
  { 
    printf("%d is Largest\n", b);  
  } 
  else 
  {
    printf("Both are Equal\n");
  }
}

Output
Enter Two Integer Value = 1
0
1 is Largest

3. Check year is Leap year or not.

Program
#include<stdio.h>
void main() 
{
  int year;
  printf("Enter Year = ");
  scanf("%d", &year);
  if (( year%400 == 0)|| (( year%4 == 0 ) &&( year%100 != 0)))
    printf("%d is a Leap Year", year);
  else
    printf("%d is not a Leap Year", year);
}

Output
Enter Year = 1775
1775 is not a Leap Year

4. Check whether number is Positive or Negative.

Program
#include<stdio.h>
void main() 
{
  int num;
  printf("Enter Integer Number = ");
  scanf("%d",&num);
  if (num >= 0)
  {
    if (num > 0)
      printf("%d is Positive", num);
    else
      printf("You have entered value zero.");
  }
  else
    printf("%d is Negative", num);
}

Output
Enter Integer Number = -4
-4 is Negative

5. Find Grade of a Student.

Program
#include<stdio.h>
void main() 
{
  int english, chemistry, computers, physics, maths; 
  float total, percentage;
  printf("Enter the Five Subjects Marks = ");
  scanf("%d%d%d%d%d", &english, &chemistry, &computers, &physics, &maths);
  total = english + chemistry + computers + physics + maths;
  percentage = (total / 500) * 100;
  printf("Total Marks = %.2f\n", total);
  printf("Marks Percentage = %.2f", percentage);
  if(percentage >= 90)
  {
    printf("\n Grade A");
  }
  else if(percentage >= 80)
  {
    printf("\n Grade B");
  }
  else if(percentage >= 70)
  {
    printf("\n Grade C");
  }
  else if(percentage >= 60)
  {
    printf("\n Grade D");
  }
  else if(percentage >= 40)
  {
    printf("\n Grade E");
  }
  else 
  {
    printf("\n Fail");
  } 
}

Output
Enter the Five Subjects Marks = 
44
66
88
99
33
Total Marks = 330.00
Marks Percentage = 66.00
Grade D

6. Calculate Profit or Loss in a Company.

Program
#include<stdio.h>
void main() 
{
  float product_cost, sales_amount, amount;
  printf("Enter Product Cost = ");
  scanf("%f", &product_cost);
  printf("\nEnter Sales Price = ");
  scanf("%f", &sales_amount);
  if (sales_amount > product_cost)
  {
    amount = sales_amount - product_cost;
    printf("\n Profit Amount  =  %.4f", amount);
  }
  else if(product_cost > sales_amount)
  {
    amount = product_cost - sales_amount;
    printf("\n Loss Amount  =  %.4f", amount);
  }
  else
    printf("\n No Profit No Loss!");
}

Output
Enter Product Cost = 987
Enter Sales Price = 1000
Profit Amount  =  13.0000

7. Calculate Electricity Bill.

Bill Unit Charges:

First 50 Units Charge is Rs. 0.50/unit.
For Next 100 Units Charge is Rs. 0.75/unit.
For Next 100 Units Charge is Rs. 1.20/unit.
For Unit Above 250 Charge is Rs. 1.50/unit.
An Additional Surcharge of 20% is added to the bill.

Program
#include<stdio.h>
void main() 
{
  int unit;
  float amt, total_amt, sur_charge;
  printf("Enter total units consumed = ");
  scanf("%d", &unit);
  if(unit <= 50)
  {
    amt = unit * 0.50;
  }
  else if(unit <= 150)
  {
    amt = 25 + ((unit-50) * 0.75);
  }
  else if(unit <= 250)
  {
    amt = 100 + ((unit-150) * 1.20);
  }
  else
  {
    amt = 220 + ((unit-250) * 1.50);
  }
  sur_charge = amt * 0.20;
  total_amt  = amt + sur_charge;
  printf("Electricity Bill = Rs. %.2f", total_amt);
}

Output
Enter total units consumed = 35
Electricity Bill = Rs. 21.00

8. Calculate Gross Salary of an Employee.

Program
#include<stdio.h>
void main() 
{
  float basic_salary, HRA, DA, gross_salary;
  printf("Enter the Basic Salary of an Employee = ");
  scanf("%f", &basic_salary);
  if (basic_salary <= 10000)
  {
    HRA = (basic_salary * 6) / 100; 
    DA = (basic_salary * 10) / 100;    	
  } 
  else if (basic_salary <= 20000)
  {
    HRA = (basic_salary * 12) / 100;
    DA = (basic_salary * 20) / 100;  	
  }
  else
  {
    HRA = (basic_salary * 18) / 100; 
    DA = (basic_salary * 30) / 100;
  }
  gross_salary = basic_salary + HRA + DA;
  printf("Gross Salary of Employee = %.2f", gross_salary); 
}

Output
Enter the Basic Salary of an Employee = 4000
Gross Salary of Employee = 4640.00

9. Find a Number which is divided by 5 and 11.

Program
#include<stdio.h>
void main()
{
  int num;
  printf("Enter an Integer Value = ");
  scanf("%d", &num);
  if ((num % 5 == 0) && (num % 11 == 0))
    printf("%d is Divisible by 5 and 11", num);
  else
    printf("%d is Not Divisible by 5 and 11", num);
}

Output
Enter an Integer Value = 55
55 is Divisible by 5 and 11

10. Check character is Alphabet or Digit.

Program
#include<stdio.h>
void main() 
{
  char ch;
  printf("Enter one Character or Digit = ");
  scanf("%c", &ch);
  if( (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') )
  {
    printf("%c is an Alphabet", ch);  	
  }
  else if (ch >= '0' && ch <= '9')
  {
    printf("%c is a Digit", ch);  	
  }    
  else
    printf("%c is not an Alphabet, or a Digit", ch);
}

Output
Enter one Character or Digit = z
z is an Alphabet

11. Check character is Vowel or Consonant.

Program
#include<stdio.h>
void main()
{
  char ch;
  printf("Enter one Alphabet = ");
  scanf(" %c", &ch);
  if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U')  
  {
    printf("%c is a Vowel.", ch);
  }
  else 
  {
    printf("%c is a Consonant.", ch);
  }
}

Output
Enter one Alphabet = Y
Y is a Consonant.

12. Create a Menu System like [1] Add, [2] Edit, [3] Delete, [4] Exit.

Program
#include<stdio.h>
void main()
{
  int ch;
  printf("[1] ADD");
  printf("\n[2] Edit");
  printf("\n[3] Delete");
  printf("\n[4] Exit");
  printf("\nEnter your choice = ");
  scanf("%d",&ch);
  if(ch==1)
  {
    printf("Add option selected");
  }
  else if(ch==2)
  {
    printf("Edit option selected");
  }
  else if(ch==3)
  {
    printf("Delete option selected");
  }
  else if(ch==4)
  {
    printf("Exit option selected");
  }
  else
  {
    printf("Invalid Entry");
  }
}

Output
[1] ADD
[2] Edit
[3] Delete
[4] Exit
Enter your choice = 3
Delete option selected

Note:

All the programs are compiled and executed in Dev C++ code editor and save with .c extension.
%.2f is used to print fractional values only up to 2 decimal places. You can also use %f to print fractional values normally up to six decimal places.

C Programming if-else Program (PDF)

C Programming if-else Program Download (PDF)

Note:

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