Como crear una matriz de 3x3 conmenú en c++

Creador: jose cordero

#include<iostream.h>#include<conio.h>void ir_principal();void ir_secundaria();void ir_inversa();void main(){int op;do{clrscr();gotoxy(20,4); cout<<"*********Menu*********";gotoxy(20,5); cout<<"1.)matriz principal";gotoxy(20,7); cout<<"2.)matriz secundaria";gotoxy(20,9); cout<<"3.)matriz inversa";gotoxy(20,11); cout<<"4.)Salir";op=getch();if(op=='1')ir_principal();if(op=='2')ir_secundaria();if(op=='3')ir_inversa();}while(op!='4');}

void ir_principal(){int i,j,matriz[3][3];for(i=1;i<=3;i++){for(j=1;j<=3;j++){cout<<"ing un valor:";cin>>matriz[i][j];}}for(i=1;i<=3;i++){for(j=1;j<=3;j++){if(i==j){cout<<matriz[i][j]<<endl;}}}getch();}

void ir_secundaria(){int i,j,matriz[3][3];for(i=1;i<=3;i++){for(j=1;j<=3;j++){cout<<"ing un valor:";cin>>matriz[i][j];}}for (i=1;i<=3;i++){for (j=1;j<=3;j++){if(i+j==4){cout<<matriz[i][j]<<endl;}}}getch();}

{int i,j,matriz[3][3];for(i=1;i<=3;i++){for(j=1;j<=3;j++){cout<<"ing un valor:";cin>>matriz[i][j];}}for (i=3;i>=1;i--){for (j=3;j>=1;j--){cout<<matriz[i][j]<<endl;}}}getch();

void ir_inversa()