Simulation of a Simple Calculator | COMPUTER PROGRAMMING LABORATORY | 21CPL27/17

program

#include<stdio.h>

#include<stdlib.h>

void main()

{

    float a,b,c;

    char op;

    printf("enter the two operands\n");

    scanf("%f%f",&a,&b);

    printf("enter an operator\n");

    scanf("%f",&op);

    switch (op)

{

    case'+': c=a+b;

    printf("%f+%f=%f\n",a,b,c);

    break;

    case'-': c=a-b;

    printf("%f-%f=%f\n",a,b,c);

    break;

    case'*': c=a*b;

    printf("%f*%f=%f\n",a,b,c);

    break;

    case'/': if(b!=0)

{

    c=a/b;

    printf("%f/%f=%f\n",a,b,c);

    exit(0);

}

    else

    printf("division by 0 error");

    break;

    default:

    printf("enter valid operation");

}

} 

Algorithm

Start 

Read 2 numbers as a and b

Read operator (+ or – or * or /) as op

If op is + then display a + b

Else If op is - then display a – b 

Else If op is * then display a * b 

Else If operator is / then 

 check if b is not equal to zero then display a / b 

 Otherwise display “Can not divide by 0” 

Stop