怎么把一个int数组转化为char型数组？？

/*
234
Press any key to continue
*/
#include <stdio.h>

int main() {
int i,num = 234,n;
char ch,s[10];
for(n = 0; num; ++n) {
s[n] = num % 10 + '0';
num /= 10;
}
s[n] = '\0';
for(i = 0; i < n / 2; ++i) {
ch = s[i];
s[i] = s[n - 1 - i];
s[n - 1 - i] = ch;
}
puts(s);
return 0;
}