ref: 09065798bf0445de3ec4a34ef714bdae3502f198
dir: /tests/libc/execute/0026-strstr.c/
#include <assert.h> #include <stdio.h> #include <string.h> /* output: testing done end: */ int main() { char buf[30] = "abc"; puts("testing"); assert(strstr(buf, "abc") == buf); assert(strstr(buf, "bc") == buf + 1); assert(strstr(buf, "c") == buf + 2); assert(strstr(buf, "d") == NULL); strcpy(buf, "ababc"); assert(strstr(buf, "abc") == buf+2); assert(strstr("", "abc") == NULL); assert(strstr(buf, "") == buf); buf[0] = '\0'; assert(strstr(buf, "") == buf); puts("done"); return 0; }