WEEK: 7 PROGRAM 3 AND PROGRAM 4 NPTEL Problem Solving through Programming in C (Jan 27) 2020 solutions

PROBLEM SOLVING THROUGH PROGRAMMING IN C.

By Prof. ANUPAM BASU


WEEK 7:PROGRAM 3:

Write a C program to find subtraction of two matrices i.e. matrix_A - matrix_B=matrix_C.

 If the given martix are 

 2 3 5     and  1 5 2    Then the output will be  1 -2 3

 4 5 6             2 3 4                                           2 2 2

 6 5 7             3 3 4                                           3 2 3

 The elements of the output matrix are separated by one blank space 

 for(i=0; i<row; i++)
    {
        for(j=0; j<col; j++)
        {
            matrix_C[i][j]=matrix_A[i][j]-matrix_B[i][j];
        }
    }

  for(i=0; i<row; i++)
    {
        for(j=0; j<col; j++)
        {
            printf("%d ", matrix_C[i][j]);
        }
    printf("\n");
    }

return 0;
}

WEEK 7:PROGRAM 4:

Write a C program to print lower triangle of a square matrix.

For example the output of a given matrix 

2 3 4     will be       2 0 0

5 6 7                      5 6 0

4 5 6                      4 5 6

for(i = 0; i < r; i++)
   {
    
     for(j = 0; j < r; j++)
     {
      if(i >= j)
      {
       printf("%d ", matrix[i][j]);
   }
   else
   {
    printf("0 ");
   }
      }
  printf("\n");
   }
   
  return 0;
}
}

Week-7 :Program-05

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