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| //A*B
#include <iostream>
using namespace std;
void input(int A[20][20],int &m,int &n);
void output(int A[20][20],int &m,int &n);
int mnoj(int A[20][20],int B[20][20],int &m,int &y);
int main (){
int A[20][20],B[20][20],m,n,x,y;
srand(time(0));
cout << "Informaciya o matrice A (kolichestvo strok doljno sovpadat s kolichestvom stolbcov v matrice B!)" << endl;
input(A,m,n);
cout << endl << "Informaciya o matrice B " << endl;
input(B,x,y);
cout << endl << "Matrica A:" << endl;
output(A,m,n);
cout << endl << "Matrica B:" << endl;
output(B,x,y);
cout << endl << "Umnojenie:" << endl;
mnoj(B,A,m,y);
output(C,m,y);
system("PAUSE");
return 0;
}
void input(int A[20][20],int &m,int &n){
int i,j;
cout << "Vvedite kolichestvo strok v matrice:" << endl;
cin >> m;
cout << "Vvedite kolichestvo stolbcov v matrice:" << endl;
cin >> n;
for (i=0; i<m; i++){
for (j=0; j<n; j++){
A[i][j]=rand()%10;
}
}
}
void output(int A[20][20],int &m,int &n){
int i,j;
for (i=0; i<m; i++){
for (j=0; j<n; j++){
cout << A[i][j] << "\t";
}
cout << endl;
}
}
int mnoj(int A[20][20],int B[20][20],int &m,int &y){
int i,j,i1,j1,sum,C[20][20];
for (i=0; i<m; i++){
for (j=0; j<y; j++){
i1=0;
j1=0;
sum=0;
while ((i1<m) && (j1<y)){
sum+=A[i][j1]*B[j][i1];
i1++;
j1++;
}
C[i][j]=sum;
}
}
return C[m][y];
} |
