View Compilation Error

0_0_15760322_28688.cpp: In function 'void dijkstra()':
0_0_15760322_28688.cpp:40:2: error: a function-definition is not allowed here before '{' token
  {
  ^
0_0_15760322_28688.cpp:45:31: error: expected '}' at end of input
         printf("%d\n",a[0][n]);
                               ^