Write a MATLAB program that finds all negative numbers in a
     Write a MATLAB program that finds all negative numbers in a matrix and then sets them all to zero. Your program should first ask users to enter the matrix. 
  
  Solution
MATLAB CODE:-
clear
 clc
 r = input(\'no.of rows = \'); % Enter no.of rows of a matrix
 c = input(\'no.of columns = \'); % Enter no.of columns of a matrix
 disp(\'Enter Matrix Elements\')
 for i = 1:1:r
     for j = 1:1:c
         A(i,j) = input(\'\');% Eneter Matrix
         j = j+1;
     end
     i = i+1;
 end
 for i = 1:1:r
     for j = 1:1:c
         A1 = A(i,j);
         if (A1<0)
             A2(i,j) = 0;
         else
             A2(i,j) = A1;
         end
         j = j+1;
     end
     i = i+1;
 end
 A2
 OUTPUT :-
no.of rows = 3
 no.of columns = 3
 Enter Matrix Elements
 -6
 -8
 6
 9
 1
 -5
 -6
 7
 3
A2 =
     0     0     6
      9     1     0
      0     7     3

