Simulation of a Simple Calculator Program and Algorithm Computer Science Engineering VTU

simple calculator

#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(" %c",&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");
}
} 

simple calculator

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