19 lines
248 B
C
19 lines
248 B
C
|
#include <stdio.h>
|
||
|
|
#include <ctype.h>
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
int c = 0;
|
||
|
|
while(1) {
|
||
|
|
c = getchar();
|
||
|
|
}
|
||
|
|
if (c == islower(c)) {
|
||
|
|
c = toupper(c);
|
||
|
|
}
|
||
|
|
else if (c == isupper(c)) {
|
||
|
|
c = tolower(c);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|