设置printf中int值输出的宽度

#include <stdio.h>
int main(void)
{
    int jane, tarzan, cheeta;
    cheeta = tarzan = jane = 68;
    printf(                  cheeta   tarzan    jane\n);
    printf(First round score %4d %8d %8d\n,cheeta,tarzan,jane);

    return 0;
}