Funksiyaga massivlarni berganimizda, eng katta muammo bu qanday qilib massivdagi elementlari sonini berishdir. Eng yaxshi usul bu massiv kattaligini qo'shimcha kirish parametri orqali funksiyaga bildirishdir

#include
#include
int main()
{
int m, n, a[10][10];
cout << "Satrlar sonini kiriting \nm=";cin >> m;
cout << "Ustunlar sonini kiriting \nn=";cin >> n;
cout <<"Massiv elementlarini kiriting \n";
for(int satr = 0; satr < m ; satr++)
for(int ustun = 0; ustun < n; ustun++)
{
cout << "a[" << satr << "][" << ustun << "]="; cin >> a[satr][ustun];
}
for(int satr = 0; satr < m; satr++)
{
for(int ustun = 0; ustun < n; ustun++)
cout << a[satr][ustun] << "\t"; cout<<"\n";
}
system ("pause");
return 0;
}

Masala. a(m, n) matritsani b(n, p) matritsaga ko'paytirishdan hosil bo'lgan c(m, p) matritsani chiqaruvchi programma tuzilsin.
#include
#include
void matrix_print(int **a, int m, int n)
{
// matritsani jadval shaklida chiqarish
for (int i = 0; i < m; i++)
{
for (int j = 0; j < n; j++)
{
cout << a[i][j] << "\t";
}
cout << "\n";
}
}
void matrix_input (int **a, int m, int n)
{
for (int i = 0; i < m; i++)
for (int j = 0; j < n; j++)
cin >> a[i][j];
}
void matrix_delete (int **a, int m)
{
// Dinamik massivdan foydalanib bo'lgandan so'ng
// uni xotiradan o'chirish lozim
// oldin massiv satrlari o'chiriladi (xotira bo'shatiladi)
for (int i = 0; i < m; i++)
delete []a[i];
// endi massivning o'zini o'chirish mumkin
delete []a;
}
// create_matrix - ko'rsatkichga ko'rsatkich qaytaradi
int ** create_matrix(int m, int n)
{
int **ptr;
// matritsa satrlari uchun xotira ajratish
ptr = new int *[m];
for (int i = 0; i < m; i++)
// matritsa ustunlari uchun xotira ajratish
ptr[i] = new int [n];
return ptr;
}
int main()
{
int m, n, p, **a, **b, **c;
cout << "A matritsa satrlar sonini kiriting \nm="; cin >> m;
cout << "A matritsa ustunlar sonini kiriting \nn="; cin >> n;
cout << "B matritsa ustunlar sonini kiriting \np="; cin >> p;
// matritsalarni hosil qilish
a = create_matrix(m, n);
b = create_matrix(n, p);
c = create_matrix(m, p);
cout << "A massiv elementlarini kiriting \n";
matrix_input(a, m, n);
cout << "B massiv elementlarini kiriting \n";
matrix_input(b, n, p);
cout << "Kiritilgan A matritsa\n";
matrix_print(a, m, n);
cout << "Kiritilgan B matritsa\n";
matrix_print(b, n, p);
// c matritsa elementlarini 0 qilish
for (int i = 0; i < m; i++)
for (int j = 0; j < p; j++)
c[i][j] = 0;
// A matritsani B matritsaga ko'paytirish
for (int i = 0; i < m; i++)
for (int j = 0; j < n; j++)
for (int k = 0; k < p; k++)
{
c[i][k] += a[i][j] * b[j][k];
}
cout << "Natija C matritsa\n";
matrix_print(c, m, p);
matrix_delete(a, m); // a matritsani o'chirish
matrix_delete(b, n); // b matritsani o'chirish
matrix_delete(c, m); // c matritsani o'chirish
return 0;
system ("pause");
}