LongestWord

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define nombredesmots 5
int main()
{
    char* a[10];
    char* b[10];
    int i,j,k[10],index=0,compteur[10];
    //on the next 10 rows the input will be initiated as two  arrays with words
    for(i=0;i<5;i++)
    {
        a[i]=(char*) malloc(10);
        scanf("%s",a[i]);
    }
    for(i=0;i<5;i++)
    {
        b[i]=(char*) malloc(10);
        scanf("%s",b[i]);
    }
    /* starting to compare every word with every to establish
    which are identical and take the position from the first array and lenght of the word as well
    */
    for(i=0;i<5;i++)
    {
        for(j=0;j<5;j++)
        {
            if(strcmp(a[i],b[j])==0)
            {
            k[index]=i;
            compteur[index]=strlen(a[i]);
            index++;
            }
        }
    }
    int max,position;
    //check if the counter array is empty and check which word of the equals has the biggest lenght and print it on the console
    if(index==-1);
    else
    {
        max=compteur[0];
        for(i=1;i<index;i++)
        {
            if(max<compteur[i]) {max=compteur[i];position=i;}
        }
        printf("%s",a[k[position]]);
    }
}