C Diamond

#include <stdio.h>
#include <string>
class diamond
{
public:
void diam(int n,int m)
{
for (int i = 0; i < m; i++)
{
for (int i = 1; i <= n; i++)
{
for (int k = 0; k <= n-i; k++)printf(" ");
for (int x = 0; x <i*2-1; x++)printf("=");
printf("\n");
}
}
for (int i = n - 1; i > 0; i--)
{
for (int k = 0; k <= n - i; k++)printf(" ");
for (int x = 0; x < i * 2 - 1; x++)printf("=");
printf("\n");
}
}
};
int main(int argc,char** args)
{
diamond d;
d.diam(10, 1);
return 0;
}