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C Program to Replace all the Characters by Lowercase

Posted on May 22, 2013 by staff10

This is a C Program to replace all the characters by lowercase.

Problem Description

This is a C Program to replace all the characters by lowercase.

Problem Solution

1. Take a string as input.
2. Use string function strlwr to replace all the characters by lowercase.

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Program/Source Code

Here is source code of the C Program to replace all the characters by lowercase. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /*
  2.  * C Program to Replace all the Characters by Lowercase 
  3.  */
  4. #include <stdio.h>
  5. #include <string.h>
  6.  
  7. int main()
  8. {
  9.    char string[1000];
  10.  
  11.    printf("Input a string to convert to lower case\n");
  12.    gets(string);
  13.  
  14.    printf("Input string in lower case: %s\n",strlwr(string));
  15.  
  16.    return  0;
  17. }
Program Explanation

1. Take a string as input and store it in the array string[].
2. Using strlwr function replace all the characters by lowercase.

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Runtime Test Cases
Input a string to convert to lower case
CHANDANA chanikya
rAVELLA
 
Input string in lower case:
chandana chanikya
ravella

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Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & 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, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

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