libc

my libc
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strchr.c (311B)

      1 /*
      2  * strchr.c - locate character in string
      3  * Copyright (C) 2026. All rights reserved.
      4  */
      5 
      6 #include "libc.h"
      7 
      8 char *strchr(const char *s, int c) {
      9   char chr = (char)c;
     10 
     11   while (*s != '\0') {
     12     if (*s == chr)
     13       return (char *)s;
     14     s++;
     15   }
     16 
     17   if (chr == '\0')
     18     return (char *)s;
     19 
     20   return NULL;
     21 }