P5733 [深基6.例1] 自动修正
#include <cstdio>
#include <cstring>
char s[105];
int main()
{
scanf("%s", s);
int len = strlen(s);
for (int i = 0; i < len; ++i) {
if (s[i] >= 'a' && s[i] <= 'z') {
s[i] -= 32;
}
}
printf("%s\n", s);
return 0;
}