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created by

anonymous

1 minute ago

​x
 
#include <iostream>
#include <vector>
​
std::vector < std::vector <int> > interchange(std::vector < std::vector <int> > vect)
{
    /* In : a 2d vector containing only binaries.
    Out : the previous 2d vector with the binaries interchanged. */
​
    for (int i = 0; i < vect.size(); i++)
    {
        for (int j = 0; j < vect[i].size(); j++)
        {
            if (vect[i][j] == 0)
            {
                vect[i][j] = 1;
            }
            else 
            {
                vect[i][j] = 0;
            }
        }    
    }
​
    return vect;
}
​
int main()
{
    std::vector < std::vector <int> > vect // error : expected ';' at end of declaration
    {
        {1, 0, 1},
        {1, 1, 1},
        {0, 0, 1}
    };
​
    interchange(vect);
}
​

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prog.cc: In function 'std::vector<std::vector<int> > interchange(std::vector<std::vector<int> >)':
prog.cc:9:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for (int i = 0; i < vect.size(); i++)
      |                     ~~^~~~~~~~~~~~~
prog.cc:11:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |         for (int j = 0; j < vect[i].size(); j++)
      |                         ~~^~~~~~~~~~~~~~~~

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