Created
March 6, 2014 08:55
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| #include <stdio.h> | |
| #include <ctype.h> | |
| int main(void) | |
| { | |
| int c; | |
| for(; ;) | |
| { | |
| c=getchar(); | |
| if(islower(c)) | |
| c=toupper(c); | |
| else if(isupper(c)) | |
| c=tolower(c); | |
| putchar(c); | |
| } | |
| return 0; | |
| } |
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