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C program for addition subtraction multiplication and division using switch case

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instanceof java

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C program for addition subtraction multiplication and division using switch case Posted: Jun 10, 2017 5:11 AM
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Original Post: C program for addition subtraction multiplication and division using switch case
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  • Write a C program to simulate a simple calculator to perform arithmetic operations like a and division only on integers. Error message should be reported if any attempt is made to divide by zero    
  • C program for addition subtraction multiplication and division using switch case
  • Write a c program to perform arithmetic operations using switch case
  • C program to add subtract multiply and divide two numbers using functions
Program #1: Write a c program to perform arithmetic operations using switch case



  1. #include <stdio.h>
  2. #include <conio.h>
  3.  
  4. int main()
  5. {
  6.     char oper;            /* oper is an operator to be selected */
  7.     float n1, n2, result;
  9.  
  10.     printf ("Simulation of a Simple Calculator\n\n");
  11.  
  12.     printf("Enter two numbers\n");
  13.     scanf ("%f %f", &n1, &n2);
  14.  
  15.     fflush (stdin);
  16.  
  17.     printf("Enter the operator [+,-,*,/]\n");
  18.     scanf ("%c", &oper);
  20.  
  21.     switch (oper)
  22.        {
  23.         case '+': result = n1 + n2;
  24.               break;
  25.         case '-': result = n1 - n2;
  26.               break;
  27.         case '*': result = n1 * n2;
  28.               break;
  29.         case '/': result = n1 / n2;
  30.               break;
  31.         default : printf ("Error in operation\n");
  32.               break;
  33.     }
  34.  
  35.     printf ("\n%5.2f %c %5.2f= %5.2f\n", n1,oper, n2, result);
  36. getch();
  37. }


Output:

algorithm for switch case in c


  • Output
    Simulation of Simple Calculator

    Enter two numbers
    3 5
    Enter the operator [+,-,*,/]
    +

     3.00 +  5.00=  8.00
     
  • RUN2
    Simulation of Simple Calculator

    Enter two numbers
    12.75
    8.45
    Enter the operator [+,-,*,/]
    -

    12.75 -  8.45=  4.30
  • RUN3
    Simulation of Simple Calculator

    Enter two numbers
    12 12
    Enter the operator [+,-,*,/]
    *

    12.00 * 12.00= 144.00
     
  • RUN4
    Simulation of Simple Calculator

    Enter two numbers
    5
    9
    Enter the operator [+,-,*,/]
    /

     5.00 /  9.00=  0.56

Read: C program for addition subtraction multiplication and division using switch case

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