C Program for Addition Subtraction Multiplication and Division using Function

Learn about C Program for Addition Subtraction Multiplication and Division using Function in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

Contents

C Program for Addition Subtraction Multiplication and Division using Function

Program:

#include<stdio.h>

float input()
{
  float n;
  scanf("%f",&n);
  return n;
}


void display(float n1, float n2, char ch, float result)
{
  printf("%.2f %c %.2f = %.2f\n", n1, ch, n2, result);
}

void add(int n1, float n2)
{
  float result;
  result = n1 + n2;
  display(n1, n2, '+', result);
}


void subtract(float n1, float n2)
{
  float result;
  result = n1 - n2;
  display(n1, n2, '-', result);
}


void multiply(float n1, float n2)
{
  float result;
  result = n1 * n2;
  display(n1, n2, '*', result);
}


void divide(float n1, float n2)
{
  float result;
  result = n1 / n2;
  display(n1, n2, '/', result);
}


int main()
{
  char ch;
  int choice;
  float n1, n2;

  do
  {
    printf("Enter first number: ");
    n1 = input();
    printf("Enter second number: ");
    n2 = input();
     
    printf("\nWhich operation you want to perform,\n");
    printf("1.Addition\n");
    printf("2.Subtraction\n");
    printf("3.Multiplication\n");
    printf("4.Division\n");
    printf("Enter your choice: ");
    scanf("%d", &choice);
     
    switch (choice) {
      case 1:
        add(n1, n2);
        break;
      case 2:
        subtract(n1, n2);
        break;
      case 3:
        multiply(n1, n2);
        break;
      case 4:
        divide(n1, n2);
        break;
      default:
        printf("Invalid choice");
    }

    printf("\nDo you want to continue (y/n): ");
    scanf("%c",&ch);
    scanf("%c",&ch);
    printf("--------------------------------\n");

  } while(ch=='y');

  return 0;
}

Output:

Enter first number: 5
Enter second number: 3
Which operation you want to perform,
1.Addition
2.Subtraction
3.Multiplication
4.Division
Enter your choice: 1
5.00 + 3.00 = 8.00

Do you want to continue (y/n): y

Enter first number: 4
Enter second number: 2
Which operation you want to perform,
1.Addition
2.Subtraction
3.Multiplication
4.Division
Enter your choice: 2
4.00 – 2.00 = 2.00

Do you want to continue (y/n): n

Hope above code works for you and Refer the below Related Codes to gain more insights. Happy coding and come back again.