c++ - Error] expected primary-expression before '=' token

Question

When I run my code on dev,it remind me this error,however i can't find any bug ,so hope someone can tell me what wrong with the code thanks! Here is my code:

#include<iostream>
using  namespace std;
int main(){
int a[12][12];

char c;
cin>>c;
 for (int i = 0; i < 11; ++i)

        for (int j = 0; j < 12; ++j)

            cin >> a[i][j];
double sum=0;
if (c=='S'){
     for (int i = 1; i < =10; ++i)

        for (int j = 12-i; j >=1; --j)

            sum=sum+a[i][j];
            printf("%.1f",sum);
    
    
}

else if(c=='M'){
    
    for (int i = 1; i < =10; ++i)

        for (int j = 12-i; j >=1; --j)

            sum=sum+a[i][j];
            printf("%.1f",sum/66);   
}
      
}

question from:https://stackoverflow.com/questions/65861576/error-expected-primary-expression-before-token

Answer 1

Waitting for answers