/*
 * Program to echo command-line arguments.
 * (Also checks whether they're integers.)
 */
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {
	for (int i = 0; i < argc; ++i) {
		printf("arg %d is %s\n", i, argv[i]);
		char * endptr;
		int n = strtol(argv[i], &endptr,10);
		if (*endptr == '\0') printf("an integer %d\n", n);
	}
	return 0;
}