Arithmetic operations

• For addition - 

#include <stdio.h>

int main()
{ int a,b,c;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b); //Input the numbers
    c=a+b; //performing the operater
    printf("The sum is %d",c); // printing the value 

    return 0;
}

• For subtraction -

#include <stdio.h>

int main()
{ int a,b,c;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b); //Input the numbers
    c=a-b; //performing the operater
    printf("The difference is %d",c); // printing the value 

    return 0;
}

• For multiplication - 

#include <stdio.h>

int main()
{ int a,b,c;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b); //Input the numbers
    c=a*b; //performing the operater
    printf("The multiplication is %d",c); // printing the value 

    return 0;
}

• For division - 

 #include <stdio.h>

int main()
{ int a,b,c;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b); //Input the numbers
    c=a/b; //performing the operater
    printf("The division is %d",c); // printing the value 

    return 0;
}

Alternative approach - 

(using only 2 variables)

 #include <stdio.h>

int main()
{ int a,b;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b); //Input the numbers
    printf("The sum is %d",a+b); // printing the value 

    return 0;
}