#include<stdio.h> ????main() ????{ ?????float?sum; ?????int?flag=1,num=0,i=1,k,j; ?????while(sum*sum>=1/10^(-8)) ????????{ ????????num=num+i; ????????num=num+1; ????????sum=flag/num; ????????flag=(-1)*flag; ????????i++; ????????} ????????printf("f\n","sum"); ????????sum=0; ????for(j=1;j<=20;j++) ????????{ ????????scanf("%d",&k); ????????sum=sum+k; ????????} ????printf("Sum:%d\n",sum); ????printf("請(qǐng)輸入一行字符"); ????scanf("%s",&m);//m有問(wèn)題：不是這個(gè)范圍的聲明。 ????int?count1=0,count2=0,count3=0,count4; ????while((m=getchar())!='\n') ????????{ ???????count3++; ???????if((m=getchar())='%d')//不知道下面這兩行的getchar()用對(duì)沒(méi)有。 ????????{ ????????????count1++; ????????????}else?if((m=getchar())='?') ????????????{ ????????????count2++; ????????????} ????????} ????????????count4=count3-(count1+count2); ????????????printf("%d,%d,%d\n",count1,count2,count4); ????return?0; ????}