View Compilation Error

0_0_30723620_8728.cpp: In function 'void ini()':
0_0_30723620_8728.cpp:23:21: error: 'maxn' was not declared in this scope
  for(int i = 1; i < maxn; i++)
                     ^
0_0_30723620_8728.cpp: In function 'int main()':
0_0_30723620_8728.cpp:36:7: error: 'init' was not declared in this scope
  init();
       ^
0_0_30723620_8728.cpp:37:16: error: 'scacnf' was not declared in this scope
  scacnf("%d",&t);
                ^
0_0_30723620_8728.cpp:40:21: error: 'n' was not declared in this scope
   scanf("%d %d %d",&n,&f,&b); 
                     ^
0_0_30723620_8728.cpp:40:24: error: 'f' was not declared in this scope
   scanf("%d %d %d",&n,&f,&b); 
                        ^
0_0_30723620_8728.cpp:40:27: error: 'b' was not declared in this scope
   scanf("%d %d %d",&n,&f,&b); 
                           ^