2020-10-02 08:52:07

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
// Bai 2.
int main(int argc, char *argv[]) {
	
	int n;
	int m;
	int i;
	
	printf("\nNhap n: ");
	scanf("%d", &n);
	printf("\nNhap m: ");
	scanf("%d", &m);
	
	if(n<2){
		printf("\n%d Khong phai la so nguyen to");
		return 0;
	}
	int count = 0;
    for(i = 2; i <= sqrt(n); i++){
        if(n % i == 0){
            count++;
        }
    }
    if(count == 0){
        printf("\n%d la so nguyen to", n);
    }else{
        printf("\n%d khong phai so nguyen to", n);
    }
	
	return 0;
}

2020-10-02 08:51:45

{
//Bai 2:
	int n,m,i;
	printf("\nNhap n:");
	scanf("%d",&n);
	
	printf("\nNhap m:");
	scanf("%d",&m);
	
	for(int i=0;i<n;i++)
{
	if (IsPrime(a[i]))
{
	printf("%d/t",a[i]);
}
}
}

2020-10-02 08:51:26

bai 2:

#include <stdio.h>
#include <math.h>
 //bai 2:
int main(){
	int i;
	
	printf("\nNhap so n = ");
	scanf("%d", &n);
	
	printf("\nNhap so m = ");
	scanf("%d", &m)
	
		

    return 0;
}
 

2020-10-02 08:51:13

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int i;
int IsPrime(int n,int m){
	if(n&&m<2){
		printf("\n khong phai so nguyen to ");
	}
	for()
}
int main(int argc, char *argv[]) {
	int n,m;
printf("\n nhap so n = ");
scanf("%d",&n);
printf("\n nhap so m = ");
scanf("%d",&m);


	return 0;
}

2020-10-02 08:51:12

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int i;
int IsPrime(int n,int m){
	if(n&&m<2){
		printf("\n khong phai so nguyen to ");
	}
	for()
}
int main(int argc, char *argv[]) {
	int n,m;
printf("\n nhap so n = ");
scanf("%d",&n);
printf("\n nhap so m = ");
scanf("%d",&m);


	return 0;
}

2020-10-02 08:50:12

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
//bat dau code;
//bai 2;
int main(int argc, char *argv[]) {
	int m, n, i;
	printf("\nNhap so tu nhien m = ");
	scanf("%d", &m);
	printf("\nNhap so tu nhien n =  ");
	scanf("%d", &n);
	
	
	return 0;
}

2020-10-02 08:50:00

#include <stdio.h>
#include <stdlib.h>
# include <math.h>


int main(int argc, char *argv[]) {
	
int count = 0,a,i,n,m;
    printf("\nNhap n = ");
    scanf("%d", &n);
    printf("\nNhap m = ");
    scanf("%d", &m);
    
    
    for(a=n; a <= m; a++){
    	for(i=2; i<= sqrt(a); i++){
    		if(a % i == 0){
            count++;
        }
  		
		}
    	if(count==0){
    		printf("%d", a);
		}
		
}
	
return 0;
}

2020-10-02 08:49:58

#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	printf("==============bai 2==========");
	int m, n;
	printf("\nNhap so n= ");
	scanf("%d",&n);
	printf("\nNhap so m= ");
	scanf("%d", &m);
	
	if(n>m) {
		return 0;
	}
	int i, j;
	for(i=n;i<=m;i++) {
		
			}
		}
	}
	return 0;
}

2020-10-02 08:49:09

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
//Exercise 1:
int isPrime(int number){
	int a,b;
	if(number>=2){
		for(a=2;a<=sqrt(number);a++){
			if(number%a!=0){
				printf("1");	
			}else{
				printf("0");
			}
		}
		
	}else{
		printf("0");
	}
}
    
int main(int argc, char *argv[]) {
//Exercise 2:
	int n,m,i,c=0,d;
	printf("Please enter a number");
	printf("\n + n = ");
	scanf("%d",&n);
	printf("\n + m = ");
	scanf("%d",&m);
	for(i=n;i<=m;i++){
        for (d=2; d<=sqrt(i); d++){
            if (i % d == 0){
                c++;
            }
        }
        if (c==0&&c>1){
        	printf("%d\n", i);
		}
    }
	return 0;
}

2020-10-02 08:49:06

#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
typedef int So_nguyen; 

int main(int argc, char *argv[]) {
	
	int n, m, i, j;
	
	printf("\nNhap n = ");
	scanf("%d", &n);
	printf("\nNhap m = ");
	scanf("%d", &m);
	for(i=2;i<n;i++) {
		for(j=2;j<m;j++) {
			if(i%j==0); 
		}
	}
	printf("\ncac so nguyen to tu n den m = %d", j);
	
	
	return 0;
}