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C Program to Check if a given Integer is Odd or Even

Posted on November 7, 2012 by staff10

This is a C program to check whether a given integer is odd or even.

Problem Description

The program takes the given integer and checks whether the integer is odd or even.

Problem Solution

1. Take the integer to be checked as input.
2. Find the remainder of the integer by dividing it by 2.
3. Use if,else statement to check whether the remainder is equal to zero or not.
4. Print the output and exit.

Program/Source Code

Here is source code of the C program to check whether a given integer is odd or even.The C program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. #include <stdio.h>
  2.  
  3. void main()
  4. {
  5.     int ival, remainder;
  6.  
  7.     printf("Enter an integer : ");
  8.     scanf("%d", &ival);
  9.     remainder = ival % 2;
  10.     if (remainder == 0)
  11.         printf("%d is an even integer\n", ival);
  12.     else
  13.         printf("%d is an odd integer\n", ival);
  14. }
Program Explanation

1. User must first enter the integer to be checked which is stored in the variable ival.
2. Find the remainder of the integer by dividing the variable ival by integer 2 and the value is stored in the variable remainder.
3. Use if,else statement to check whether the value of the variable remainder is equal to zero or not.
4. If it is equal to zero, then print the output as “the integer is an even integer”.
5. If it is not equal to zero, then print the output as “the integer is an odd integer”.

Runtime Test Cases
 
Case 1:
Enter an integer : 24
24 is an even integer
 
Case 2:
Enter an integer : 75
75 is an odd integer
 
Case 3:
Enter an integer : 0
0 is an even integer

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If you wish to look at other example programs on Simple C Programs, go to Simple C Programs. If you wish to look at programming examples on all topics, go to C Programming Examples.
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  10. C Programming Examples on Bitwise Operations
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer and SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage & Cluster Administration, Advanced C Programming, SAN Storage Technologies, SCSI Internals and Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him below:
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