View Compilation Error

0_0_17655155_23002.cpp: In function 'int main()':
0_0_17655155_23002.cpp:5:20: error: 'a' was not declared in this scope
  scanf("%d %d %d",&a,&b,&c);
                    ^
0_0_17655155_23002.cpp:5:23: error: 'b' was not declared in this scope
  scanf("%d %d %d",&a,&b,&c);
                       ^
0_0_17655155_23002.cpp:5:26: error: 'c' was not declared in this scope
  scanf("%d %d %d",&a,&b,&c);
                          ^
0_0_17655155_23002.cpp:5:27: error: expression list treated as compound expression in initializer [-fpermissive]
  scanf("%d %d %d",&a,&b,&c);
                           ^
0_0_17655155_23002.cpp:6:6: error: 'i' was not declared in this scope
  for(i=0;i<a;i++)
      ^
0_0_17655155_23002.cpp:8:18: error: 'g' was not declared in this scope
   scanf("%d %d",&g[i],&b[i]);
                  ^
0_0_17655155_23002.cpp:8:28: error: 'scanf' cannot be used as a function
   scanf("%d %d",&g[i],&b[i]);
                            ^