Algorithm and Programming

// // Makematrix.cpp // // // // #include <iostream> #include <fstream> #include <stdio.h> #include <time.h> #include <math.h> using namespace std; int main(int argc, char *argv[]) { if ( argc < 4) { cout << "Foure inputs needed:\\ 1: Number of Rows; 2: Number of Columns; \\ 3: Sparsity (between 0-100) \\ 4: Name of output files \n";} int rows=atoi(argv[1]); int cols=atoi(argv[2]); int sparsity=atoi(argv[3]); //name of matrix is given in argv[4]; if(sparsity>100){sparsity=100;} //Get the numbers srand(time(NULL)); int k=0; int zs=ceil(rows*cols*(double)sparsity/100.00); //nmber of zeros. int A[rows][cols]; for (int i=0;i<rows;i++) { for (int j=0;j<cols;j++) { int x=rand()%2; if(x==0 && k<zs) //set vale to zero { A[i][j]=0; k++; } else //or to non-zero { A[i][j]=rand()%(100+1);} } }//end of for ofstream output; output.open(argv[4]); output << rows << " " <<cols <<"\n"; for (int k=0; k<rows; k++) { for (int l=0; l<cols; l++) { output << A[k][l] << " "; // behaves like cout - cout is also a stream } output << "\n" << endl; } output.close(); return 0; }