Migrated.

lib/include/string.h

@@ -22,6 +22,7 @@ char *strncpy(char *dest, const char *src, size_t maxlen);
 int strcmp(const char *s1, const char *s2);
 int strncmp(const char *s1, const char *s2, size_t n);
 char *strstr(const char *haystack, const char *needle);
+char *strchr(const char *s, int n);
 void *memcpy(void *dest, const void *src, size_t n);
 void *memcpy_long(void *dest, const void *src, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);

lib/string.c

@@ -80,6 +80,21 @@ int strncmp(const char *s1, const char *s2, size_t n)
 	return *s1 - *s2;
 }
 
+char *strchr(const char *s, int n) {
+	char *p = (char *)s; 
+	while (1) {
+		if (*p == n)
+		{
+			return p;
+		} else if (*p == '\0') {
+			break;
+		}
+		++p;
+	}
+	return NULL;
+}
+		
+
 char *strstr(const char *haystack, const char *needle)
 {
 	int len = strlen(needle);