#include
#include
void print_upper(char *string);
int main(void)
{
char s[80];
printf("Enter a string: ");
gets(s);
print_upper(s);
printf("\ns is now uppercase: %s", s);
return 0;
}
void print_upper(char *string)
{
register int t;
for(t=0; string[t]; ++t) {
string[t] = toupper(string[t]);
putchar(string[t]);
}
}