View Compilation Error

0_0_37486748_3523.cpp: In function 'int main()':
0_0_37486748_3523.cpp:55:8: error: too few arguments to function 'void add(int, int)'
    add()
        ^
0_0_37486748_3523.cpp:6:6: note: declared here
 void add(int u,int v){
      ^