C Library Functions -tolower()
C Standard Library - <ctype.h>
Description
C Library Functionsint tolower(int c)Convert the given letter to lowercase.
Declaration
Below is the declaration of the tolower() function.
int tolower(int c);
Parameter
- c-- This is the letter to be converted to lowercase.
Return Value
If c has a corresponding lowercase letter, the function returns the lowercase of c; otherwise, c remains unchanged. The return value is an int value that can be implicitly converted to type char.
Example
The following example demonstrates the usage of the tolower() function.
Example
#include <stdio.h>
#include <ctype.h>
int main()
{
int i = 0;
char c;
char str[] = "EXAMPLE";
while( str[i] )
{
putchar(tolower(str[i]));
i++;
}
return(0);
}
Let us compile and run the above program, which will produce the following results:
exampleother extensions