chardiff_pre.c


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#include <stdio.h>

int
main (int argc, char* argv[]) {
	char c;
	while ((c = getchar()) != EOF) {
		switch (c) {
			case '\n': puts("\\n"); break;
			case '\\': puts("\\\\"); break;
			default: printf("%c\n",c); break;
		}
	}
}