Proiect3

#include <iostream>

using namespace std;
int a[20][20];
int n,m,i,j,s,p,nr,d,dif;
int citire(int &n, int a[][20])
{
  cout<<"n= ";
  cin>>n;
  for(i=1;i<=n;i++)
  for(j=1;j<=n;j++)
  {
      cout<<"a["<<i<<"]["<<j<<"]= ";
  cin>>a[i][j];
  }
}
int afisare(int n, int a[][20])
{
    cout<<" afisare "<<endl;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
    cout<<a[i][j]<<" ";
    cout<<endl;

    }
    }

int suma(int n, int a[][20])
{
  for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        if(i==j)
        s=a[i][j]+s;
        cout<<s<<" ";
}
  int produs(int n, int a[][20])
  {    p=1;
      for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        if(i+j==n+1)
        p=a[i][j]*p;
        cout<<p<<" ";
  }
  int prime(int n, int[][20])
  {
      for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        {
            nr=0;
        for(d=2;d<=a[i][j]/2;d++)
        if(a[i][j]%d==0)
        nr=nr+1;
      if(nr==0)
        cout<<endl<<a[i][j]<<" ";}

  }
int main()
{
    //citire(n,a);
    //afisare(n,a);
    //suma(n,a);
    //produs(n,a);

    //prime(n,a);

   cout<<"n="<<" ";
   cin>>n;
   cout<<"m="<<" ";
   cin>>m;
   for(i=1;i<=n;i++)
    for(j=1;j<=m;j++)
    {cout<<"a["<<i<<"]["<<j<<"]=";
    cin>>a[i][j];}
    cout<<"matricea este=";
    for(i=1;i<=n;i++)
    {
      for(j=1;j<=m;j++)
        cout<<a[i][j]<<" ";
        cout<<endl;
    }
p=1;
    for(j=1;j<=m;j++)
    {s=s+a[1][j];
    p=p*a[2][j];
    dif=dif-a[3][j];
    }
    cout<<"s="<<s<<" p= "<<p<<" dif="<<dif;
   return 0;
}