#include <stdio.h> #include <stdlib.h> #include<ctype.h> #include<string.h> #include<math.h> int main() { char a[1000]; int i, j,n; scanf("%d", &n); getchar(); while (n--) { gets(a); for (i = 0; i < strlen(a); i++) { if (a[i] >= 'a'&&a[i] <= 'z') a[i] = a[i] - 32; else if (a[i] >= 'A'&&a[i] <= 'Z') a[i] = a[i] + 32; } puts(a); } return 0; } |
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