#include<stdio.h>
#include<stdlib.h>
#include<string.h>
main()
{
      double profit,j=1,iprofit;
      while(j>0)
      {
      puts("输入企业利润\n");
      scanf("%d",&profit);
      if(profit<=100000)/*企业profit在10万之内*/
      iprofit=profit*0.1;
      else if(profit<=200000)/*同上*/
      iprofit=((100000*0.1)+(profit-100000)*0.75);
      else if(profit<=400000)/*同上*/
      iprofit=((200000*0.1)+(profit-200000)*0.5);
      else if(profit<=600000)/*同上*/
      iprofit=((400000*0.1)+(profit-400000)*0.3);
      else
      iprofit=((600000*0.1)+(profit-600000)*.01);/*企业profit超出60万*/
      printf("奖金为%d\n",profit);//输出所得奖金
      system("pause");
      return 0;
      }
      }
输出奖金值很大，求正解...........

如果你连这都不知道错在哪里，那你还是别学编程了。

自己检查。