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13 lines
206 B
C

#include "case.h"
void case_lowerb(void *S,unsigned long len) {
char* s=(char*)S;
unsigned char x;
while (len > 0) {
--len;
x = *s - 'A';
if (x <= 'Z' - 'A') *s = x + 'a';
++s;
}
}