Program to find all prime numbers between 1 to 30

[avjal]

I have written following code..but it is not working.plzz help

// Program to find all prime numbers between 1 t0 30

#include<iostream>

using namespace std;

int main(){

int i,j=1,c=0,num;

for(i=1;i<30;i++){

while(j<=10){

num=(i%j);

if(num == 0)
c=c+1;
j++;

}

if(c<3){
cout<<i;
}

}

}

[studentlance]

Standard input is empty

[Hirokachi]

it looks like you have two separate if statements one in the while loop and one outside of the while loop but inside of the for loop, was that intended?

Also I think what you might want to do is something like the following:

for each number from 1 to 30:
    for each number from 2 to 10:
        check condition and if that is equal to zero: //as you have it  (i%j)
             then store in some structure or print to screen
 //such as an array this depends on what the assignment is asking for 
// i.e. print all prime out all at once or one at a time.
print out all contents in structure if you had a structure or do nothing. 
//depends on what the assignment is asking for 
//i.e. print all prime out all at once or one at a time. 

Please remember to use your code tags.
http://www.cplusplus.com/forum/articles/42672/

Hope this helps,

- Hirokachi