View Compilation Error

0_0_26239089_26521.cpp: In function 'int main()':
0_0_26239089_26521.cpp:48:19: error: 'Build1' was not declared in this scope
     Build1(1, n, 1);
                   ^
0_0_26239089_26521.cpp:52:37: error: 'Query1' was not declared in this scope
         B[i]=Query1(i+1,n,1,n,1,A[i]);
                                     ^