字符串转为小写

#include <stdio.h>


/* 将字符串中的大写字符全部转换为小写 */
void convertToLowerCase ( char *sPtr )
{
   while ( *sPtr != '\0' )
    {
       *sPtr = tolower ( ( unsigned char ) *sPtr);

       ++sPtr;                                  

    }

}



int main()
{
    char szString[128] = {"abcdefABCDEF"};

    convertToLowerCase(szString);

    printf("szString:%s\n",szString);   
}