nie-ii-year

commit 46c548c3163a985f59af84cf0ba3c96abd1112fd
parent a6a95716c86092b57a2f7578e988a25641d319fd
Author: Agastya Chandrakant <acagastya@outlook.com>
Date:   Fri, 27 Oct 2017 03:22:11 +0530

add
Diffstat:
A
s3/oops/matrix.cpp
 | 
106
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 106 insertions(+), 0 deletions(-)
diff --git a/s3/oops/matrix.cpp b/s3/oops/matrix.cpp
@@ -0,0 +1,106 @@
+#include <iostream>
+
+class matrix{
+  int row, col, **p;
+public:
+  int getR(){
+    return this->row;
+  };
+  int getC(){
+    return this->col;
+  };
+  matrix(){
+    p = NULL;
+  };
+  bool initMatrix(int r, int c){
+    row = r; col = c;
+    p = new int *[row];
+    for (int i = 0; i < row; i++) {
+      p[i] = new int [col];
+    }
+    if(p == NULL){
+      std::cout << "Insufficient memory." << '\n';
+      return 1;
+    }
+    return 0;
+  };
+  bool operator==(matrix other){
+    if(this->row == other.row && this->col == other.col)
+      return true;
+    return false;
+  };
+
+  matrix operator+(matrix other){
+    matrix r;
+    if(r.initMatrix(other.getR(), other.getC()))
+      std::cout << "Insufficient memory." << '\n';
+    else{
+      for(int i = 0; i < row; i++)
+        for(int j = 0; j < col; j++)
+          r.p[i][j] = this->p[i][j] + other.p[i][j];
+      return r;
+    }
+  };
+
+  matrix operator-(matrix other){
+    matrix r;
+    if(r.initMatrix(other.getR(), other.getC()))
+      std::cout << "Insufficient memory." << '\n';
+    else{
+      for(int i = 0; i < row; i++)
+        for(int j = 0; j < col; j++)
+          r.p[i][j] = this->p[i][j] - other.p[i][j];
+      return r;
+    }
+  };
+
+  void getData(){
+    for (int i = 0; i < row; i++)
+      for(int j = 0; j < col; j++)
+        std::cin >> p[i][j];
+  };
+  void operator <<(int x){
+    for (int i = 0; i < row; i++){
+      for(int j = 0; j < col; j++)
+        std::cout << p[i][j] << " ";
+        std::cout << std::endl;
+    }
+  };
+};
+
+int main(){
+  matrix m, n, a, s;
+  int r, c;
+  do{
+    std::cout << "Enter rows and columns of first matrix: ";
+    std::cin >> r >> c;
+    if(r < 1 || c < 1)
+      std::cout << "Invalid size, try again." << '\n';
+  }while (r < 1 || c < 1);
+  if(m.initMatrix(r, c))
+    return 0;
+  do{
+    std::cout << "Enter rows and columns of second matrix: ";
+    std::cin >> r >> c;
+    if(r < 1 && c < 1)
+      std::cout << "Invalid size, try again." << '\n';
+  }while (r < 1 && c < 1);
+  if(n.initMatrix(r, c))
+    return 0;
+  std::cout << "Enter first matrix:" << '\n';
+  m.getData();
+  std::cout << "Enter second matrix: " << '\n';
+  n.getData();
+  if(m == n) {
+    a = m + n;
+    a << 0;
+    s = m - n;
+    s << 0;
+  }
+  else {
+    std::cout << "Incompatible.\n";
+    m << 0;
+    n << 0;
+  }
+  return 0;
+}