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Improve int argument parsing

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This commit is contained in:
Adam Goldsmith 2016-04-26 10:22:34 -04:00
parent 70b79a8b56
commit 0b947b701f
1 changed files with 8 additions and 5 deletions
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13
csim.c
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@ -17,11 +17,14 @@ void print_usage()
int parse_int_arg(char* arg) int parse_int_arg(char* arg)
{ {
int i = atoi(arg); char* end;
if (i != 0) int i = strtol(arg, &end, 0);
return i; if (!i || *end != '\0')
else {
exit(-1); printf("Invalid argument \"%s\"\n", arg);
print_usage();
}
return i;
} }
int main(int argc, char* argv[]) int main(int argc, char* argv[])