关于#c##的问题，请各位专家解答！

Question

printf("%5s","餐桌号码");
            printf("%15s","餐桌人数");
            printf("%13s","点菜道数");
            printf("%11s","需付金额");
            printf("%20s","所点菜品"); 
            printf("\n"); 
            
            printf("%4d号",i);
            printf("%11d人",can_desk[i].people);
            printf("%11d道",can_desk[i].sl);
            printf("%11dRmb",can_desk[i].sum);

如何知道需要多少%前的数字如何得出的

Answer 1

要根据你想输出什么样的格式而定
你想让字符串占15个位置就填15