ref: 2c7a34994ed9fcb63465f8e86de7b70b3a48f6f5 dir: /src/libc/string/strchr.c/
#include <string.h> #undef strchr char * strchr(const char *s, int c) { while (*s && *s != c) ++s; return (*s == c) ? (char *)s : NULL; }