Main.cc: In function 'int main()':
Main.cc:8:12: error: size of array 'a' has non-integral type 'double'
int a[n][m],b[n][m];
^
Main.cc:8:12: error: size of array 'a' has non-integral type 'double'
Main.cc:8:20: error: size of array 'b' has non-integral type 'double'
int a[n][m],b[n][m];
^
Main.cc:8:20: error: size of array 'b' has non-integral type 'double'