B. Even Numbers – Codeforces Problem Solution in C

Disclaimer: Make sure you tried enough before checking the solution

Problem: https://codeforces.com/group/MWSDmqGsZm/contest/219432/problem/B

#include<stdio.h>
int main(){
    int a,i,j=0;
    scanf("%d",&a);
    for(i=1;i<=a;i++){
        if(i%2==0){
            printf("%d\n",i);
        }
        j++;
    }
    if(j==1){
        printf("-1\n");
    }
    return 0;
}

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