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  1. #include <cmath>
  2. #include <cstdio>
  3. #include <vector>
  4. #include <iostream>
  5. #include <algorithm>
  6. #include <iomanip>
  7. using namespace std;
  8. class Matx_Op
  9. {
  10.     int row, col, i, j;
  11.     float k;
  12.     public :
  13.     void Scalar_Mulp()
  14.     {
  15.         cin >> k;                           //Input scalar
  16.         cin >> row >> col;                  //Input dimension
  17.         float A[row][col];
  18.         for (i=0; i<row; i++)
  19.         {
  20.             for (j=0; j<col; j++)
  21.             {
  22.                 cin >> A[i][j] ;            //Input matrix
  23.             }
  24.         }
  25.         for (i=0; i<row; i++)
  26.         {
  27.             for (j=0; j<col; j++)
  28.             {
  29.                 cout << fixed << setprecision(1) << k*A[i][j] << " " ;            //Output resultant matrix
  30.             }
  31.             cout << endl;
  32.         }
  33.     }
  34.  
  35.     void matx_mulp()
  36.     {
  37.         int p,q,r,s;
  38.         cin >> p >> q;                          //Input dimensions of first matrix
  39.         int A[p][q];
  40.         for (i=0; i<p; i++)
  41.         {
  42.             for (j=0; j<q; j++)
  43.             {
  44.                 cin >> A[i][j] ;            //Input matrix
  45.             }
  46.         }
  47.         cin >> r >> s;                          //Input dimensions of second matrix
  48.         int B[r][s];
  49.         for (i=0; i<r; i++)
  50.         {
  51.             for (j=0; j<s; j++)
  52.             {
  53.                 cin >> B[i][j] ;            //Input matrix
  54.             }
  55.         }
  56.         if(q==r)
  57.         {
  58.             int C[p][s];
  59.             for (i=0; i<p; i++)
  60.         {
  61.             for (j=0; j<s; j++)
  62.             {
  63.                 C[i][j] = 0;
  64.                 for (int d=0; d<q; d++)
  65.                 {
  66.                     C[i][j] += A[i][d]*B[d][j] ; 
  67.                 }
  68.             }
  69.         }
  70.             for (i=0; i<p; i++)
  71.         {
  72.             for (j=0; j<s; j++)
  73.             {
  74.                 cout << C[i][j] << " " ;            //Output resultant matrix
  75.             }
  76.                 cout << endl;
  77.         }
  78.         }
  79.     }
  80.  
  81.     void matx_add()
  82.     {
  83.         int p,q,r,s;
  84.         cin >> p >> q;                          //Input dimensions of first matrix
  85.         int A[p][q];
  86.         for (i=0; i<p; i++)
  87.         {
  88.             for (j=0; j<q; j++)
  89.             {
  90.                 cin >> A[i][j] ;            //Input matrix
  91.             }
  92.         }
  93.         cin >> r >> s;                          //Input dimensions of second matrix
  94.         int B[r][s];
  95.         for (i=0; i<r; i++)
  96.         {
  97.             for (j=0; j<s; j++)
  98.             {
  99.                 cin >> B[i][j] ;            //Input matrix
  100.             }
  101.         }
  102.  
  103.         if(p==r && q==s)
  104.         {
  105.             int C[p][r];
  106.             for (i=0; i<p; i++)
  107.             {
  108.                 for (j=0; j<r; j++)
  109.                 {
  110.                     C[i][j] = A[i][j] + B[i][j];
  111.                 }
  112.             }
  113.  
  114.         for (i=0; i<p; i++)
  115.         {
  116.             for (j=0; j<r; j++)
  117.             {
  118.                 cout << C[i][j] << " " ;
  119.             }
  120.             cout << endl;
  121.         }
  122.     }
  123.     }
  124.  
  125.     void conc()
  126.     {
  127.         int num, k, i, j, r=0, c=0;
  128.         cin >> num ;                    //Input number of matrices
  129.         for (k=1; k<=num; k++)
  130.         {
  131.             cin >> row >> col;
  132.             int A[row][col];
  133.             for (i=0; i<row; i++)
  134.             {
  135.                 for (j=0; j<col; j++)
  136.                 {
  137.                     cin >> A[i][j];
  138.                 }
  139.             }
  140.  
  141.             int C[50][50];
  142.             for (int r; r<row; r++)
  143.             {
  144.             	for (int c; c<col; c++)
  145.             	{
  146.             		C[r][c] = A[r][c];
  147.             	}
  148.             }
  149.             r= row;
  150.             c= col;
  151.  
  152.  
  153.  
  154.  
  155.             for (i=0; i<row; i++)
  156.             {
  157.             	for (j=0; j<col; j++)
  158.             	{
  159.             		cout << A[i][j] << " " ;
  160.             	}
  161.             	cout << endl;
  162.             }
  163.  
  164.         }
  165.     }
  166. };
  167.  
  168. int main() 
  169. {
  170.     Matx_Op Matrix;                                 // Operation to be performed..
  171.     int check;
  172.     cin >> check;                               //Input function to be performed
  173.  
  174.             if (check==1)     
  175.             {
  176.                 Matrix.Scalar_Mulp();
  177.             }
  178.             else if (check==2)
  179.             {
  180.                 Matrix.matx_mulp() ;
  181.             }
  182.             else if (check==3)
  183.             {
  184.                 Matrix.matx_add()  ;
  185.             }
  186.             else
  187.             {
  188.                 Matrix.conc() ;
  189.             }
  190.     return 0;
  191. }
  192.  
Success #stdin #stdout 0s 4516KB
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https://ideone.com/AOayox
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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