size of a matrix using vector c++
// finding size of a square matrix
myVector[0].size();
size of a matrix using vector c++
// finding size of a square matrix
myVector[0].size();
how to take input in 2d vector in c++
std::vector<vector<int>> d;
//std::vector<int> d;
cout<<"Enter the N number of ship and port:"<<endl;
cin>>in;
cout<<"Enter preference etc..:n";
for(i=0; i<in; i++){
cout<<"ship"<<i+1<<":"<<' ';
for(j=0; j<in; j++){
cin>>temp;
d[i].push_back(temp);
}
}
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