#include main() { int n1, n2; int strlen(char *), strlen2(char *); char buf[1000]; while (fgets(buf, sizeof buf, stdin) != NULL) { n1 = strlen(buf); n2 = strlen2(buf); printf("%d %d\n", n1, n2); } return 0; } #include "strlen.c" #define strlen strlen2 #include "strlen2.c"