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src/lowercase/case.c
2023-12-23 08:51:22 -07:00

20 lines
398 B
C

#include <stdio.h> /* fprintf(3), stderr, stdin, stdout */
#if !defined EX_OK || !defined EX_USAGE
# include <sysexits.h>
#endif
int main(int argc, char *argv[]){
CHARACTER c; /* iterating over character stream */
if(argc > 1){
fprintf(stderr, "Usage: %s\n", argv[0]);
return EX_USAGE;
}
while((c = GETC(stdin)) != ENDOFFILE)
PUTC(ISVALID(c) ? CONV(c) : c, stdout);
return EX_OK;
}