C文字列の長さと検索文字を求める

#include 
#include 
#include

#define TRUE 1
#define FALSE 0

int main(int argc, char *argv[]) {
	
	size_t myStrlen(char *string);
	int myFind_char(char *string, char value);
	int myFind2_char(char **strings, char value);
	
	char *str = "12345678aaa";
	printf("%d
",myStrlen(str));
	
	char * str2 = "a123456789";
	printf("%d
",myFind_char(str2,'0'));
	
	char  *str3[] = {"123","456","789",NULL};
	printf("%d
",myFind2_char(str3,'a'));
	
	return 0;
}
 /*
 **        
 */
size_t myStrlen(char * string)
{
	int length = 0;
	
	while(*string++ != '\0')
	{
		length +=1;
	}
	
	return length;
 } 
  /*
 **          
 */
 int myFind_char(char *string, char value)
 {

	 if(string != NULL){	 
	 
	 	while(*string != '\0'){
	 		if(*string++ == value){
	 				return TRUE;
			 } 		 
		 }
	 	
	 }	 	 
	 return FALSE;	
 }
 /*
 **            
 */
 int myFind2_char(char **strings, char value)
 {
 	char *string;
 	while((string = *strings++) != NULL)
	 {
 		while(*string != '\0')
 		{
 			if(*string++ == value)
 			{
 				return TRUE;
			 }
		 }
	 }
	 return FALSE;	
 }