conversion from char to int- strchr

[enemy]

Hello!
Please, what is wrong with the conversion here?

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

int main(){

char word[40]="akva";
int dol=strlen(word);
cout <<dol;

int a=strchr(word, (int)'a');
cout<<a;
return 0;
}

Many thanks!