I need help with my practice

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C++

1. Write a program to generate a vector of size n entered from the keyboard, with random integers in the interval: k - w, then form two new vectors, the first one with primes ordered in increasing form and the other with ordered non-prime numbers in a decreasing way.

28. For any n generate

Example for n = 5:
9	8	7	6	5
16	15	14	13	4
21	20	19	12	3
24	23	18	11	2
25	22	17	10	1

79. Generate a matrix of size NF * NC, with random integers between zero and one hundred, then separate the perfect ones first, then the non-perfect ones, by columns from bottom to top and from left to right.

92. Generate a matrix of size n, with random numbers, then add a new column and a new row, in these new spaces, obtain the number of primes per rows, the number of non-primes per columns and the number of perfects in the main diagonal

Example for n = 5:

6	16	20	23	25	1
70	12	17	21	24	1
4	8	13	18	22	1
2	51	97	28	19	4
1	3	11	10	15	2
4	3	1	4	4	2

What I have tried:

#include <iostream>
using namespace std;
void listaMatriz(int m[][50], int n){
	int f,c;
	cout << endl << "listado " << endl;
	for(f=0;f<n;f++){
       for(c="0;c<n;c++){
          cout << "\t" << m[f][c];
       }
     endl;
   }
}

void efila(int m[][50], int f, int n, int *e){
   int c, et=*e;
   for (c=0; c < n-(f+1); c++){
      m[f][c]=et;
      et++;
      *e=et;
   }

void ecolumna(int fi;
   c=n-(f+1);
   (fi=f; fi < n; fi++){
      m[fi][c]=et;
      escuadras(int m[][50], n){
      f,e=1;
      (f=0; f< n; f++){
         efila(m,f,n,&e);
         ecolumna(m,f,n,&e);
      }
   }

int main(int argc, char *argv[]) {
   m[50][50];
   n="10;
   escuadras(m,n);
   listamatriz(m,n);
   return="" 0;
}