将数字1234转换为字符1234

#include 

void print( int val)
{
    int tmp = val/10;
    if( tmp != 0)
    {
        print(tmp);

    }
    putchar( val % 10 + '0');


}

int main()
{
    int val = 1234;
    print(val);
    putchar('\n');
    return 0;

}