evaluate an expression like caliculator

//evaluate an expression like caliculator
Objective:

Two integer operands and one operator form user, performs the operation and then prints the result. (Consider the operators +,-,*, /, % and use Switch Statement)

Description:


To take the two integer operands and one operator from user to perform the some arithmetic operations by using the following operators like +,-,*, /, %
Ex: 2+3=5

#include<math.h>
#include<stdio.h>
#include<conio.h>
void main()
{
 float a,b;
 char op;
 printf("etner expression terminating by= \n");
 scanf("%f",&a);
 scanf("%c", &op);
 while(op!='=')
 {
  scanf("%f",&b);
  switch(op)
  {
   case '+':
  {
   a=a+b;
   break;
  }
  case '-':{
   a=a-b;
   break;
   }
  case '*':{
  a=a*b;
  break;
  }
  case '/':{
   a=a/b;
   break;
  }
   }//swtch
   scanf("%c",&op);
   }//   while
   printf("results is %f\n",a);
   getch();
}

Example:
i/p: 3+4*5-6/2=
o/p: 14.5

Input/Output:

1)enter two operands:2 3 enter an operator:+

sum of two numbers 2 3 is: 5

2.)enter two operands:3 4 enter an operator: -

subtraction of two numbers 3 4 is: -1


24

3)enter two operands:3 5
   enter an operator:*
   product of two numbers 3 5 is: 15

    4) enter two operands:5 2
        enter an operator:/

        quotient of two numbers 5 2 is: 2.5

    5) enter two operands:5 2
        enter an operator:%
        reminder of two numbers 5 2 is: 1

conclusion: The program is error free


VIVA QUESTIONS:

1) What are the various types of arithemetic operators ?
Ans: addition (+), multiplication(*), subtraction (-), division(/) , modulo(%).

 2) What are the types of relational operators ?
Ans: less than(<), grater than(>), less than or equal to(<=),equal to(==), etc..,

3) 3) What are the types of logical operators ?
Ans: logical AND (&&), logical OR(||), logical NOT(!)

Algorithm

Flow chart

program

c programs