Where is error?

Question

#include <iostream>
using namespace std;

int i,j;
for(i=1; i<=4; i=i+1); {
for (j=1; j<=5; j=j+1);
{printf("%d ", i+j);}
printf("\n");

return 0;
}

Answer 1

Remove semicolan after for loop and include all this in the main function
#include <iostream>
using namespace std;
int main(){
int i,j;
for(i=1; i<=4; i=i+1) {
for (j=1; j<=5; j=j+1)
{printf("%d ", i+j);}
printf("\n");
}
return 0;
}