Answer to Question #204934 in C for Ali khan

Question

Write a program that converts all lowercase characters in a given string to its 

equivalent uppercase character. 

Answer 1

#include <ctype.h>
#include <stdio.h>

int main()
{
    char* tmp;
    char str[] = "String Test One";
    printf("Source string: '%s'\n", str);

    tmp = str;
    while(*tmp)
    {
        if(islower(*tmp))
        {
            *tmp = toupper(*tmp);
        }

        ++tmp;
    }
    
    printf("Result string: '%s'\n", str);
    return 0;
}