07/05/13 23:20:30
>>6
#include <stdio.h>
int main(int argc, char *argv[])
{
FILE *fd;
char ch;
if (argc < 2) {
fprintf(stderr,"[usage] %s infile\n",argv[0]);
return -1;
}
if (!(fd = fopen(argv[1],"r"))) {
fprintf(stderr,"cannot open %s\n",argv[1]);
return -1;
}
while (fread(&ch,1,1,fd)==1) printf("%c",('a'<=ch)&&(ch<='z')?(ch-'a'+'A'):ch);
fclose(fd);
return 0;
}