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View Compilation Error

0_0_39627072_11449.cpp: In function 'bool hw(char, int)':
0_0_39627072_11449.cpp:8:13: error: invalid types 'char[int]' for array subscript
    8 |         if(a[i]!=a[j]){
      |             ^
0_0_39627072_11449.cpp:8:19: error: invalid types 'char[int]' for array subscript
    8 |         if(a[i]!=a[j]){
      |                   ^
0_0_39627072_11449.cpp: In function 'int main()':
0_0_39627072_11449.cpp:19:11: error: invalid conversion from 'char*' to 'char' [-fpermissive]
   19 |     if(hw(a)){
      |           ^
      |           |
      |           char*
0_0_39627072_11449.cpp:19:10: error: too few arguments to function 'bool hw(char, int)'
   19 |     if(hw(a)){
      |        ~~^~~
0_0_39627072_11449.cpp:5:6: note: declared here
    5 | bool hw(char a,int n){
      |      ^~
In file included from gcc-13.1.0/x86_64-w64-mingw32/include/crtdefs.h:10,
                 from gcc-13.1.0/x86_64-w64-mingw32/include/assert.h:15,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/cassert:44,
                 from .\stdc++.h:33:
gcc-13.1.0/x86_64-w64-mingw32/include/sec_api/stdio_s.h: In instantiation of 'char* get_s(char (&)[__size]) [with long long unsigned int __size = 105]':
0_0_39627072_11449.cpp:17:10:   required from here
gcc-13.1.0/x86_64-w64-mingw32/include/sec_api/stdio_s.h:572:3: error: no matching function for call to 'get_s(char [105], long long unsigned int)'
  572 |   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_0(char*,get_s,char,_DstBuf)
      |   ^
gcc-13.1.0/x86_64-w64-mingw32/include/sec_api/stdio_s.h:572:3: note: candidate: 'template<long long unsigned int __size> char* get_s(char (&)[__size])'
  572 |   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_0(char*,get_s,char,_DstBuf)
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc-13.1.0/x86_64-w64-mingw32/include/sec_api/stdio_s.h:572:3: note:   template argument deduction/substitution failed:
gcc-13.1.0/x86_64-w64-mingw32/include/sec_api/stdio_s.h:572:3: note:   candidate expects 1 argument, 2 provided
  572 |   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_0(char*,get_s,char,_DstBuf)
      |   ^


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