#include <stdio.h>
#include <string.h>

int main(void) {
  char *test = "m111 foo bar11";
  char comtodo[][12] = {
    "m11"
  }; 
    
    char *istr = strstr(test, comtodo[0]);
    int len = strlen(comtodo[0]);
    
    printf("Len is: %d\n", len);
    printf("pointer: %s\n", istr);
    
	if (istr != NULL) {
		printf ("Found at %d\n",istr-test+1);
	} else {
		printf ("Not found\n");
	}
	return 0;
}