View Compilation Error

0_0_34966041_23157.cpp: In function 'void djkstra(int)':
0_0_34966041_23157.cpp:18:23: error: 'n' was not declared in this scope
  for (int i = 1; i <= n; i++) {
                       ^
0_0_34966041_23157.cpp: In function 'int main()':
0_0_34966041_23157.cpp:43:12: error: 'dijkstra' was not declared in this scope
  dijkstra(1);
            ^