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Arithmetic operations in C

hamza
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2022-05-18
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Arithmetic operations in C

C program to perform basic arithmetic operations of addition, subtraction, multiplication, and division of two numbers/integers that user inputs.

Division in C

In C language, when we divide two integers, we get an integer result, e.g., 5/2 evaluates to 2.

As a general rule integer/integer = integer, float/integer = float and integer/float = float. So we convert denominator to float in our program, you may also write float in the numerator. This explicit conversion is known as typecasting.

C programming,
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hamza
2022-05-18
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#include <stdio.h>
int main()
{
   int first, second, add, subtract, multiply;
   float divide;
 
   printf("Enter two integers\n");
   scanf("%d%d", &first, &second);
 
   add = first + second;
   subtract = first - second;
   multiply = first * second;
   divide = first / (float)second;   //typecasting, you can also write: divide = (float)first/second

   printf("Sum = %d\n", add);
   printf("Difference = %d\n", subtract);
   printf("Multiplication = %d\n", multiply);
   printf("Division = %.2f\n", divide); // "%.2lf" to print two decimal digits, by default (%lf) we get six
 
   return 0;
}

output:

Enter two integers

2

3

Sum = 5

Difference = -1

Multiplication = 6

Division = 0.67

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