micro-utils/coreutils/echo.c

#include <stdio.h>

int main(const int argc, const char **argv) {
	if (argc > 1) {
		for (int i = 1; i < argc; i++) {
			fputs(argv[i], stdout);
			if (i < argc - 1)
				putchar(' ');
		}
	}
	// https://pubs.opengroup.org/onlinepubs/009604599/utilities/echo.html
	// This version does not support -n option and escape-sequences
	putchar('\n');
	return 0;
}