Wrong answer in the output

#1

when i output top down approach for even columns, an extra zero is being outputted in the end of that column

#2

@kamakshi.behl22
hello kamakshi,
pls save ur code on https://ide.codingblocks.com/ and share the generated link

#3

//when i output top down approach for even columns, an extra zero is there in the end of that column

#include
using namespace std;
int main() {
int r,c;
cin>>r;
cin>>c;
int a[10][10];
for(int i=0;i<r;i++){
for(int j=0;j<c;j++){
cin>>a[i][j];
}
}

for(int i=0;i<c;i++){ 
    if(i%2==0){ 
        for(int j=0;j<r;j++){
            cout<<a[j][i]<<","; 
            } 
        } 
     else 
        for(int j=r;j>=0;j--){ 
            cout<<a[j][i]<<","; 
                } 
} 
cout<<"END"; 
return 0; 
}
#4

@kamakshi.behl22

here ur j should start from r-1 and not from r