[TEMA] Dificultate citire matrice

#include<iostream>
#include<fstream>
using namespace std;
void main()
{
int m,n,mat[20][20];
ifstream myReadFile;
myReadFile.open("in.txt");
myReadFile>>m>>n;
for(int i=1;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
myReadFile>>mat[i][j];
}
}
for(int i=1;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
cout<<mat[i][j]<<" ";
}
cout<<endl;
}
int sign=0,param=-1;
for(int i=2;i<=n+m;i++)
{
for(int j=1;j<=m;j=j++)
{
for(int k=1;k<=n;k++)
{
if(j+k==i)cout<<mat[k-sign][j+sign]<<" ";
if(i==((n*m/2)+param))sign=n-m;
//nu am reusit sa determin modalitatea prin care se calculeaza parametrul corect pentru o citire corecta
// 4 X 3 este -1
// 3 X 4 este -1
// 5 X 4 este -4
// 3 x 2 este +1
}
}
cout<<endl;
}
myReadFile.close();
}
/*valoari in.txt
3 4
1 2 3 4 21
5 6 7 8 31
9 10 11 12 41
51 61 71 81 91
101 102 103 104 105
*/

void selectedRead (const int **p, int linii, int coloane){
for (int c=0,l=0 ; c+l<=linii+coloane-2 ; c<coloane-1 ? c++ : l++){
		 int copyC=c;
		 int copyL=l;
		 while (copyC >=0 && copyL <= linii-1){
				 cout << p[copyL][copyC] << ' ';
				 copyC--;
				 copyL++;
		 }
}
}

Edited by Rhesus, 01 July 2015 - 18:55.

Rhesus, on 01 iulie 2015 - 18:54, said:

void selectedRead (const int **p, int linii, int coloane){
for (int c=0,l=0 ; c+l<=linii+coloane-2 ; c<coloane-1 ? c++ : l++){
		 int copyC=c;
		 int copyL=l;
		 while (copyC >=0 && copyL <= linii-1){
				 cout << p[copyL][copyC] << ' ';
				 copyC--;
				 copyL++;
		 }
}
}