userland/libc/string/strchr.c


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#include <string.h>

char *strchr(const char *s, int c) {
  for (; *s; s++) {
    if (*s == (char)c) {
      return (char *)s;
    }
  }
  if ((char)c == '\0') {
    return (char *)s;
  }
  return NULL;
}