Check prime number

-

 #include<stdio.h>


int main(){

    // Prime Numbers = A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. 

    // Disclaimer: This is not the best method to solve this problem

    int n = 2, prime=1;

    for(int i=2;i<n;i++){

        if (n%i==0 ){

            prime = 0;

            break;

        }

    }

    if (prime==0){

        printf("This is not a prime number");

    }

    else{

        printf("This is a prime number");

    }

    return 0;

}

Comments

Post a Comment

Popular posts from this blog

Snake game.c

-
  #include<STDLIB.H> #include<stdio.h> #include<conio.h> #include<time.h> int height =23 ,width =78,x,y,fruitx,fruity,score,gameend,flag; int tailx[100],taily[100]; int piece=0; //x = height and y= width void makelogic(){ int i ; int prevx,prevy,prev2x,prev2y; prevx=tailx[0]; prevy=taily[0]; tailx[0]=x; taily[0]=y; for(i =1;i <=piece;i++){ prev2x=tailx[i]; prev2y=taily[i]; tailx[i]=prevx; taily[i]=prevy; prevx=prev2x; prevy=prev2y; } switch(flag){ case 1: x--; break; case 2: x++; break; case 3: y--; break; case 4: y++; break; } if(x==0||y==0||x==height||y==width){ gameend = 1; } if(x==fruitx && y == fruity){ label3: fruitx = rand ()%23 ; if (fruitx==0){ goto label3; } label4: fruity = rand ()%78 ; if (fruity==0) goto label4; score++; piece++; } } void input(){ ...
Read more

Type declaration

-
 #include<stdio.h> int main(){     // int a = 4; // Type declaration instruction     // int a = 4, b, c; // Type declaration instruction     // b = c = a;     // printf("The value of a is %d\n", a);     // printf("The value of b is %d\n", b);     // printf("The value of c is %d\n", c);     float a = 1.1;     float b = a + 8.9;     printf("The value of b is %f\n", b);     return 0; }
Read more

Array with function

-
 #include<stdio.h> // void printArray(int *ptr, int n){ //     for(int i=0; i<n; i++){ //         printf("The value of element %d is %d\n", i+1, *(ptr+i));  //     } // } void printArray(int ptr[], int n){     for(int i=0; i<n; i++){         printf("The value of element %d is %d\n", i+1, ptr[i]);      }      ptr[2] = 5555; // This value will be changes in arr array of main as well } int main(){     int arr[] = {1,2,3543,34,3,645,23};     printArray(arr, 7);     printf("%d", arr[2]);     return 0; }
Read more