'<' 标记错误之前的预期主表达式

Question

嗨，我正在回顾 C 编程练习，在这个特定的程序中，我在第 8 行（While 循环）的“

#include <stdio.h>
#include <iostream>
using namespace std;

int main(){
   int number, i=8;
   cout <<"Please enter all numbers from 8-23\n";
   cout <<"Start Now: ";
   while (i=<23){
          cin>>number;
          cout<<"Next: ";
          if (number!=i){
             cout<<"That was the wrong, Please enter: "<<i<<endl;
          }
         else 
           i++;
    }
    cout<<"Congratulations!!\n";
return 0;
}

Answer 1

while (i=<23){
        ^^

改用while (i <= 23)。

Answer 2

while (i=<23){ 应该是while(i<=23){