Main.cc: In function 'int main()':
Main.cc:68:19: error: expected ';' before string constant
printf"%3d",a[j][i];
^
Main.cc:68:32: warning: statement is a reference, not call, to function 'printf' [-Waddress]
printf"%3d",a[j][i];
^
Main.cc:68:32: warning: statement has no effect [-Wunused-value]
Main.cc:54:15: warning: unused variable 'sum' [-Wunused-variable]
int n,i,j,sum=0;
^