searching hex code pattern in buffer.

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

int FindMem2(char* pBuf,    /* Buffer where to search */
            char* pFindThis,/* Points to the key to look for */
            int iBufLen,    /* How many bytes in 'pBuf' */
            int iKeyLen     /* How many bytes in 'pFindThis' */ ) {
    int i=0, max;

    if (iKeyLen < iBufLen)//expected
        max = iBufLen - iKeyLen + 1;
    else//just in case
        return -1;

    while (i<max) {
        if (!memcmp(&pBuf[i], pFindThis, iKeyLen))
            return i;
        i++;
    }
    return -1;
}

int main(){
    char *target1 = "this is the target string, find me";
    char *find1 = "find me";
    char target2[28] = {0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0x0,0x9,0x8,0x7,0x6,0x5,0x4,0x3,0x2,0x11,0x22,0x33,0x44,0x55,0x  66,0x77,0x45, 0xff, 0xab};
    char find2[3] = {0x7,0x6,0x5};
    int retVal;

    retVal = FindMem2(target1, find1, strlen(target1), strlen(find1));
    if (retVal > -1){
        printf("FindMem2 Found string at index %d\n", retVal);
    }else{
        printf("FindMem2 Couldn't find match or error condition\n");
    }

    retVal = FindMem2(target2, find2, 28, 3);
    if (retVal > -1){
        printf("FindMem2 Found binary at index %d\n", retVal);
    }else{
        printf("FindMem2 Couldn't find binary match or error condition\n");
    }

    return 0;
}