#include <stdio.h>

void print_in_lower_case(char string[]) 
{
    int cursor = 0;
    while(string[cursor] != '\0') {
        if(string[cursor] >= 'A' && string[cursor] <= 'Z') {
	    /* Add 32. 32 is the difference in ASCII codes between
	    ** lower case and upper case characters */
	    string[cursor] += 32;
	}
	cursor++;
    }
    printf("%s", string);
}

int main() 
{
    char string1[80];
    /* Read a string from the user (will include newline) */
    printf("Enter string: ");
    fgets(string1, 80, stdin);

    print_in_lower_case(string1);
    return 0;
}