计算机模拟联系题程序改错

案:=======(答案1)=======scanf("%f",&x);=======(答案2)=======while((operate1=getchar())!='=')=======(答案3)=======switch(operate1)/*------------------------------------------------------【程序改错】题号:2-439--------------------------------------------------------功能:求100以内(包括100)的偶数之和.------------------------------------------------------*/#include<stdio.h>main(){/**********FOUND**********/inti,sum=1;/**********FOUND**********/for(i=2;i<=100;i+=1)sum+=i;/**********FOUND**********/printf("Sum=%d\n";sum);}答案:=======(答案1)=======inti,sum=0;=======(答案2)=======for(i=2;i<=100;i+=2)=======(答案3)=======printf("Sum=%d\n",sum);/*------------------------------------------------------【程序改错】题号:2-444--------------------------------------------------------功能:编写函数fun计算下列分段函数的值:x*20x<0且x≠-3f(x)=sin(x)0≤x<10且x≠2及x≠3x*x+x-1其它