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Added usage message.

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madmaurice 2015-06-19 03:11:22 +02:00
parent 1f0bd271b9
commit 2076d5f6a5
2 changed files with 17 additions and 1 deletions
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tprint/tprint Executable file
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tprint/tprint.c
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@ -24,8 +24,24 @@ int main(int argc, char** argv) {
v = atoi(*argv);
if(v == 0) v = 1000;
speed = 1.0/v;
} else if(strcmp(*argv,"-h") == 0) {
printf("usage: tprint [-h] [-s speed] [filename]\n");
printf("\t-h: Print this help.\n");
printf("\t-s speed: speed in characters per second (default: 3)\n");
exit(0);
} else if(**argv == '-' && strlen(*argv) > 1) {
printf("Unkown option %s\n",*argv);
exit(1);
} else {
if(strcmp(*argv,"-")==0) {
fh = stdin;
} else {
fh = fopen(*argv,"r");
if(fh == NULL) {
printf("Unable to open %s\n", *argv);
exit(2);
}
}
}
}