C program to subtract two number using Function

In this tutorial, we will discuss the C program to subtract two numbers using the function

In this topic, we are going to learn how to subtract two numbers (integer, floating point) using the function in C language

already we are learned the same concept using the operator

if you want to remember click here, C program to subtract two numbers

subtract two number using Function

Approach

Function declaration or prototype
Variable declaration
Read value from user
function definition
call te function
display result on the screen

Code to subtract two integer number using Function

The program allows to enter two integer values then, it calculates subtraction of the given numbers

Program 1

#include <stdio.h>
#include <stdlib.h>
int subNum(int a, int b);//Function prototype
int main()
{
    int result,num1,num2;
    printf("Enter two numbers to subtract\n");
    scanf("%d%d",&num1,&num2);
//read the input given by user

    result=subNum(num1,num2);//call the function
     printf("subtraction of given two numbers:%d",result);
     getch();
    return 0;
}
int subNum(int x, int y)//function definition
{
    int c=x-y;
    return (c);
}

When the above code is executed, it produces the following result

case 1

Enter two numbers to subtract:
456
345
subtraction of given two numbers: 111

case 2

Enter two numbers to subtract:
345
567
subtraction of given two numbers: -222

Code to subtract two floatnumbers using Function

The program allows to enter two floating point values then, it calculates subtraction of the given numbers

Program 2

#include <stdio.h>
#include <stdlib.h>
int subNum(float a, float b);//Function prototype
int main()
{
    float result,num1,num2;
    printf("Enter two numbers to subtract\n");
    scanf("%f%f",&num1,&num2);//read input value from user

    result=subNum(num1,num2);//call the function
     printf("subtraction of given two numbers:%.3f",result);
     getch();
    return 0;
}
int subNum(float x, float y)//function definition
{
    float c=x-y;
    return (c);
}

When the above code is executed, it produces the following result

case 1

Enter two numbers to subtract
455.15
230.40
Subtraction of given two numbers:224.000

case 2

Enter two numbers to subtract
345.67
456.78
Subtraction of given two numbers:-111.000

Suggetsed post

Function in C programming language

Operator in C language

Data type in C language

Variable in C language

C program to subtract two number using Function