String Matching percentage

#include <iostream>
#include <stdio.h>
using namespace std;

int main()
{
    char s1[100],s2[100];
    int match[100]= {0},i=0,j=0,k=0,count=0,large=0,s1Size=0,result=0;

    cout << "Input 1st string: ";
    gets(s1);
    cout << "Input 2nd String: ";
    gets(s2);

    for (i=0,j=0; s1[i] != '\0' && s2[j] != '\0'; i++,j++)
    {
        s1Size++;
        if(s1[i] == s2[j])
        {
            count++;
            if(s1[i+1] != '\0' && s2[j+1] != '\0')
            {
               continue;
            }
        }
        if(count!=0)
        {
            match[k] = count;
            count = 0;
            k++;
        }

    }
    for(i=0; match[i]!=0; i++)
    {
        if(match[i]>large)
        {
            large = match[i];
        }
    }
    cout << "Highest Matching: " << large << " character" <<endl;
    result = (large*100)/s1Size;
    cout << "Result: " << result << "% Matching" <<endl;

    return 0;
}