Va rog ajutati-ma aveti in poza exercițiul

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#include <iostream>

#include <fstream>

using namespace std;

ifstream fin("mat.in");

ofstream fout("mat.out");

void schimba(float *a, float *b, int n){

for(int i = 1; i<=n;i++){

float x = a[i];

a[i] = b[i];

b[i] = x;

}

}

float m[10000][10000];

int main(){

int n;

fin >> n;

for(int i = 1;i <= n; i++){

for(int j = 1; j <= n; j++)

fin >> m[i][j];

}

fin.close();

int l1,l2;

cin >> l1 >> l2;

schimba(m[l1], m[l2], n);

for(int i = 1;i <= n; i++){

for(int j = 1; j <= n; j++)

fout << m[i][j]<<' ';

fout << '\n';

}

fout.close();

return 0;

}

Raspuns:

#include <iostream>

#include <fstream>

using namespace std;

ifstream f("mat.in");

int n,i,j,l1,l2;

float a [100][100],aux;

int main ()

{

f>>n;

for(i=1;i<=n;i++)

for(j=1;j<=n;j++)

f>>a[i][j];

cout<<"l1=";

cin>>l1;

cout<<"l2=";

cin>>l2;

for(i=1;i<=n;i++)

{

aux=a[l1][i];

a[l1][i]=a[l2][i];

a[l2][i]=aux;

}

for(i=1;i<=n;i++) {

for(j=1;j<=n;j++)

cout<<a[i][j]<<" ";

cout<<endl;

}

return 0;

}

Explicație pas cu pas: