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error : no match for 'operator<<' in 'std::cin 1935374429'

This is a discussion on error : no match for 'operator<<' in 'std::cin 1935374429' within the C++ Programming forums, part of the General Programming Boards category; Hi everybody ! I get this error no match for 'operator<<' in 'std::cin 1935374429' while compiling this code : Code: ...

  1. #1
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    error : no match for 'operator<<' in 'std::cin 1935374429'

    Hi everybody ! I get this error
    no match for 'operator<<' in 'std::cin 1935374429'
    while compiling this code :
    Code:
    #include <iostream>
    #include <iomanip>
    #include <cstdlib>
    
    
    using namespace std;
    
    
    
    
    void initArray(float largeArray[6][6]){
        for (int x=0; x < 6; x++){
                for (int y=0; y<6; y++){
                      largeArray[x][y] = 0;
            }
        }
    
    
    
    
    }
    
    
    
    
    float printOutArray(float largeArray[6][6]){
        for (int x = 0; x < 6; x++){
    
    
    
    
                for (int y = 0; y < 6; y++){
                        cout << largeArray [x] [y]<<'\t';
                    }
               cout << endl;
            }
    return largeArray[6][6];
    }
    
    
    void tata (int degree_denominator, float largeArray[6][6] ){
    float array_of_coefficients[6];
    int c=0;
    int l=0;
    int x=0;
    for (x=degree_denominator ; x>=0 ; x--){
                                            if (l==1){l=0;c++;}
                                   cout << "what is the coefficient linked with degree" <<x<< "?" << endl;
                                   cin << array_of_coefficients[x];
                                   largeArray[l][c] = array_of_coefficients[x];
                                   l++;
                                       }
    }
    
    
    int main()
    {
        float largeArray [6][6];
        initArray(largeArray);
        printOutArray(largeArray);
        int degree_denominator;
        cout << "what is the degree of the denominator?" << endl;
        cin >> degree_denominator;
        tata(degree_denominator, largeArray);
    
    
    }
    My error is in my function "tata" at the line where the cin is.
    I have no clue where this error comes from, if someone could tell me something to delete this error i would greatly appreciate it

  2. #2
    and the hat of wrongness Salem's Avatar
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    > cout << "what is the coefficient linked with degree" <<x<< "?" << endl;
    > cin << array_of_coefficients[x];
    Which way round should >> and << be?
    jimblumberg likes this.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  3. #3
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    What a stupid beginner error!! OK thank you i have to write : cin >> array_of_coefficients[x];

  4. #4
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    Quote Originally Posted by funnydarkvador View Post
    What a stupid beginner error!! OK thank you i have to write : cin >> array_of_coefficients[x];
    Think of it like this:

    With "cin >> myvariable" the data moves from stdin to the variable. With "cout << myvariable" the data moves from the variable to stdout. So the flow always follows the directions of the arrows/stream operators. That's an easy way to remember it.
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