Main.cc:28:15: error: redefinition of 'int a [100][100]'
int a[100][100];
^
Main.cc:3:5: note: 'int a [100][100]' previously declared here
int a[100][100];
^
Main.cc:29:15: error: redefinition of 'int b [100][100]'
int b[100][100];
^
Main.cc:4:5: note: 'int b [100][100]' previously declared here
int b[100][100];
^
Main.cc: In function 'int main()':
Main.cc:30:5: error: redefinition of 'int main()'
int main() {
^
Main.cc:5:5: note: 'int main()' previously defined here
int main() {
^