View Compilation Error

0_0_14543774_18769.cpp: In function 'void work()':
0_0_14543774_18769.cpp:55:12: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
     scanf(n);
            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstdio:42:0,
                 from 0_0_14543774_18769.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:386:15: note: initializing argument 1 of 'int scanf(const char*, ...)'
   int __cdecl scanf(const char * __restrict__ _Format,...) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
               ^
0_0_14543774_18769.cpp:57:18: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
         scanf(a[i]);
                  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstdio:42:0,
                 from 0_0_14543774_18769.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:386:15: note: initializing argument 1 of 'int scanf(const char*, ...)'
   int __cdecl scanf(const char * __restrict__ _Format,...) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
               ^