Calculator in C

Calculator in C

By: Emiley J

This is a simple calculator written in C. To use this calculator, just type the number, followed by the operand and then by another number. The application will then display the result. After the result is displayed, the program goes into the loop which asks if they want to do another calculation. If y is pressed, another calculation can be carried out.


#include 

int main()
{
  double number1 = 1.0;
  double number2 = 2.0;
  char operation = '+';
  char answer = 0;



  switch(operation)
  {
    case '+':
      printf("= %lf\n", number1 + number2);
      break;

    case '-':
      printf("= %lf\n", number1 - number2);
      break;

    case '*':
      printf("= %lf\n", number1 * number2);
      break;

    case '/':
      if(number2 == 0)
        printf("\n\n\aDivision by zero error!\n");
      else
        printf("= %lf\n", number1 / number2);
      break;

    case '%':
      if((long)number2 == 0)
        printf("\n\n\aDivision by zero error!\n");
      else
        printf("= %ld\n", (long)number1 % (long)number2);
      break;

    default:
      printf("\n\n\aIllegal operation!\n");
  }
}

Archived Comments

1. this is very bad program because this is not run and very very mistake in this program .this is not
View Tutorial By: danish at 2016-07-07 05:34:36

2. Thanks for sharing. But I have made my own simple calculator. You can check it out here at http://ww
View Tutorial By: RIo Eduardo at 2013-02-18 02:39:08

3. the 2 not required lines
1) #include
2) char answer = 0

Add a line w
View Tutorial By: saurabh at 2012-02-20 06:33:57

4. Its not working ave made a few adjustments to it though and it okay now
View Tutorial By: amg at 2011-11-04 13:48:09

5. hi ,c language use for business man,wast for poor peoples (gradates) , so your use for any langu
View Tutorial By: p rambabu rddy at 2011-10-05 08:58:34

6. The program doesn't work as how it is described.
View Tutorial By: Gurucharan at 2011-02-03 09:21:18

7. Good work. Keep it up.
View Tutorial By: pickatutorial at 2010-10-09 09:19:50

Most Viewed Articles (in C )

A C program similar to grep command in UNIX

Error Handling - Stderr and Exit - sample program in C

Multi-dimensional Arrays in C (Explained using date conversion program)

Pointers vs. Multi-dimensional Arrays in C

lseek() sample program in C

Using calloc() Function in C

fgets(), fputs() - Line Input and Output - sample program in C

malloc, calloc - Storage Management - in C

UNIX read and write system calls sample program in C

Open, Creat, Close, Unlink system calls sample program in C

scanf and sscanf sample program in C

Listing Files and Directories sample program in C

Using malloc() Function in C

A Storage Allocator sample program in C

Fopen and Getc implementation program in C

Latest Articles (in C)

Command-line arguments in C

Simple arithmetic calculations in C

Find square and square root for a given number in C

Sorting an integer array in C

Printing a simple histogram in C

Sum of the elements of an array in C

Passing pointer to a function in C

Passing double value to a function in C

Calculator in C

Infix to Prefix And Postfix in C

while, do while and for loops in C

Unicode and UTF-8 in C

if, if...else and switch statements in C with samples

Formatting with printf in C

Statements in C

Comment on this tutorial

categories

Related Tutorials

Sum of the elements of an array in C

Printing a simple histogram in C

Sorting an integer array in C

Find square and square root for a given number in C

Simple arithmetic calculations in C

Command-line arguments in C

Calculator in C

Passing double value to a function in C

Passing pointer to a function in C

Infix to Prefix And Postfix in C

while, do while and for loops in C

Unicode and UTF-8 in C

Formatting with printf in C

if, if...else and switch statements in C with samples

Statements in C