Main.cc: In function 'int main()':
Main.cc:6:5: error: expected initializer before 'cin'
cin>>c;
^
Main.cc:14:5: error: 'a' was not declared in this scope
a[1]=1;
^
Main.cc:4:9: warning: unused variable 'b' [-Wunused-variable]
int b,c,k[1001],max=0;
^