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Create command line argument #244

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Create command line argument #244

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33 changes: 33 additions & 0 deletions DAY50/command line argument
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Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
#include <stdio.h>
#include <unistd.h>

int main(int argc, char* argv[])
{
int option = 0;

while ((option = getopt(argc, argv, ":if:lrx")) != -1) {
switch (option) {
case 'i':
case 'l':
case 'r':
printf("option: %c\n", option);
break;
case 'f':
printf("filename: %s\n", optarg);
break;
case ':':
printf("Option needs a value\n");
break;
case '?':
printf("unknown option: %c\n", optopt);
break;
}
}

while (optind < argc) {
printf("Extra arguments: %s\n", argv[optind]);
optind++;
}

return 0;
}