largest value of 2nd row in 2d array

[vaidas196]

Hello, my code needs to find largest value of 2nd row in 2d array. Everything works fine untill the column number is 5. What's wrong in the code? for exampe if i enter : 2,5; 1,2,3,4,5; 2,3,1,4,2; it outputs 2 where the answer should be 4.

  #include <iostream>
using namespace std;
int main() {
 int n,m,max;
 cin >> n >> m;
 if (n<2){
   cout << "No";
   return 0;
 }
 
 int A[n][m];
 if (m>1){
 for (int i=0; i<n; i++){
  
   for (int j=0; j<m; j++){
      max=A[1][0];
     cin>>A[i][j];
     if (A[1][j]>max) max=A[1][j];
     }
   
   }
 
 cout << max;
 }
 if (m==1){
for (int i=0; i<n; i++){
   for (int j=0; j<m; j++){
     cin>>A[i][j];
     }
   }
   cout << A[1][0];
 }
 
return 0;
}

[Manga]

Your code did not build on my computer because the array needed const values. If we use the values in your example this is what happens.

#include <iostream>

using namespace std;
int main() {
	const int n = 2, m = 5; int max;
	//cin >> n >> m;
	if (n<2) {
		cout << "No";
		return 0;
	}

	
	int A[n][m];
	if (m>1) {
		for (int i = 0; i<n; i++) {

			for (int j = 0; j<m; j++) {
				max = A[1][0]; //here max is set to 2 with each loop.
				cin >> A[i][j];
				if (A[1][j]>max) max = A[1][j]; // max changes but the last number entered was 2 so max does not change from 2.
			}

		}

		cout << max;
	}
	if (m == 1) {
		for (int i = 0; i<n; i++) {
			for (int j = 0; j<m; j++) {
				cin >> A[i][j];
			}
		}
		cout << A[1][0];
	}

	cin.ignore();
	cin.get();
	
	return 0;
}