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Đếm phần tử, dòng toàn nguyên tố, dòng thứ k có nguyên tố không

10cth1-2 July 30, 2011 Nam Le 0

[codes=c]#include "conio.h"
#include "stdio.h"
#include "math.h"
#define ROW 100
#define COL 100
void nhapmang(int a[][COL], int sodong, int socot)
{
  for(int i = 0; i<sodong; i++)
    for(int j = 0; j<socot; j++)
      {
        printf("a[%d][%d]=", i, j);
        scanf("%d", &a[i][j]);
      }
}

void xuatmang( int a[][COL], int sodong, int socot)
{
  for(int i = 0; i<sodong; i++)
    {
      for(int j = 0; j<socot; j++)
        printf("%4d",a[i][j]);
    }
    printf("\n");
}

int demptux(int a[][COL], int sodong, int socot, int x)
{
  int dem = 0;
  for(int i = 0; i<sodong; i++)
    for(int j = 0; j<socot; j++)
      {
         if(a[i][j]==x)
        dem++;
      }
   return dem;
}

int songuyento(int n)
{
  if(n<2) return 0;
  if (n==2) return 1;
  for(int i=2;i<=sqrt(n);i++)
    if(n%i==0)
    return 0;
  return 1;
}

int tontaidongtoanngto(int a[][COL], int sodong, int socot)
{
  int j;
  for(int i = 0; i< sodong; i++)
  {
    for(j = 0; j< socot; j++)
      {
        if(songuyento(a[i][j])==0)
            break;
      }
    if(j==socot)
      return 1;
  }
   return 0;
}

int dongktoanngto(int a[][COL], int sodong, int socot, int k)
{
  int j;
  for(int i = 0; i< sodong; i++)
  {
    for( j = 0; j< socot; j++)
      {
        if(songuyento(a[k][j])!=1)
          break;
        }
    if(j==socot)
           return 1;
   }
  return 0;
}
  
void main()
{
  //clrscr();
  int a[ROW][COL],sodong, socot,x,k;
  
  printf("NHap vao so dong: ");
  scanf("%d",&sodong);
  printf("Nhap vao so cot: ");
  scanf("%d",&socot);
  
  nhapmang(a, sodong, socot);
  printf("Mang vua nhap la: \n");
  xuatmang(a, sodong, socot);
  
  printf("NHap vao phan tu x cam dem: ");
  scanf("%d",&x);
  int kq = demptux(a, sodong, socot,x) ;
  printf("Phan tu %d co %d phan tu.",x,kq);
  
  int ktr = tontaidongtoanngto(a, sodong, socot);
  if(ktr==1) printf("Co ton tai dong chua toan nguyen to");
  else printf("KHong co dong nao chua ca");
  
  printf("Nhap vao dong thu k ban can kiem tra: ");
  scanf("%d",&k);
  int kq2 = dongktoanngto( a, sodong, socot, k);
  if(kq2==1) printf("Co ton tai dong chua toan nguyen to");
  else printf("KHong co dong nao chua ca");
  
  getch();
}[/codes]


Last modified on March 31st, 2021 at 1:22 am

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