求解strcmp的用法？这样不对吗？！！！

#include <bits/stdc++.h>
using namespace std;
string c[26]={"one","two","three","four","five","six","seven","eight","nine","ten",
              "eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen",
              "eighteen", "nineteen", "twenty","a","both","another","first","second",
              "third"};
int d[30]={0,1,4,9,16,25,36,49,64,81,00,21,44,69,96,25,56,89,24,61,0,1,4,1,1,4,9};
int main()
{
    string a;
    int b[10]={0},k=0;
    for (int i=1;i<=6;i++)
    {
        scanf("%s",&a);
        for(int j=1;j<=26;j++)
        {
            if(strcmp(a,c[j])==0)//strcmp(s1,s2);如果他们相同，返回0
            {
                b[++k]=d[j];//用数组存储
                break;//立即停止寻找
            }
        }
    }
    for (int i=1;i<=k;i++)
    {
        b[i]=b[i]*b[i]%100;
    }
    sort(b+1,b+1+k);
    cout<<b[1];
    for (int i=2;i<=k;i++)
    {
        if (b[i]<10)
        {
            cout<<"0"<<b[i];
        }
        else
        {
            cout<<b[i];
        }
    }
    return 0;
}