求高手老师指正 这个程序总是报错！no operator defined which takes a right-hand operand of type ''

Posted 2023-03-20

#include<iostream>
#include <math.h>
using namespace std;
void main()

int num,b=0.0; //num为班级总人数，b为及格人数
float a,c=0.0,d=0.0; //分别为录入成绩，及格成绩总和，所有成绩总和
float pj1,pj2;
cout<<"qing shu ru ban ji ren shu:\n";
cin>>num;
for(int i=1;i<=num;i++)

cout<<"qing lu ru xue sheng cheng ji:\n";
cin>>a>>endl;
d+=a;
if(a>=60)

c+=a;
b++;


pj1=c/b;
pj2=d/num;
cout<<"ji ge xue sheng de pjcj wei: ";
cin>>pj1>>endl;
cout<<"ban ji pjcj wei: ";
cin>>pj2;

参考技术A 把两个cin的>>endl去掉就好了
你是不能把cin输入的值输入到endl里面的

int num,b=0.0; //num为班级总人数，b为及格人数
float a,c=0.0,d=0.0; //分别为录入成绩，及格成绩总和，所有成绩总和
float pj1,pj2;
cout<<"qing shu ru ban ji ren shu:\n";
cin>>num; //把endl去掉
for(int i=1;i<=num;i++)

cout<<"qing lu ru xue sheng cheng ji:\n";
cin>>a;
d+=a;
if(a>=60)

c+=a;
b++;


pj1=c/b;
pj2=d/num;
cout<<"ji ge xue sheng de pjcj wei: ";
cin>>pj1; //把endl去掉
cout<<"ban ji pjcj wei: ";
cin>>pj2;本回答被提问者采纳 参考技术B cin>>a>>endl;
这里边有好多 cin >> endl的语句，这样的语句肯定不合法嘛