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C String lowercase
In this section, you will study how to convert the string to lowercase. You can see in the given example, we have define a string in uppercase characters.

C String lowercase

In this section, you will study how to convert the string to lowercase. You can see in the given example, we have define a string in uppercase characters. Therefore, in order to convert the characters in lowercase (a to z), we have used the library function tolower() provided by the header file <ctype.h>.

<ctype.h> - This header file is used for testing and converting characters.

Here is the code:

STRINGLO.C


#include <ctype.h>

#include <stdio.h>

#include <conio.h>



void main() {

  char st[40]="HELLO WORLD";

  int i;

  for (i = 0; st[i]; i++)

    st[i] = tolower(st[ i ]);

  printf("The lowercase of String= %s\n", st);

  getch();

}

Output will be displayed as:

STRINGLO.EXE

Download Source code:

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Related Tags: c com control io include conditional branch branching value number state instance opera case cas condition statement lex to complex

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