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View Compilation Error

0_0_19212713_17923.cpp: In function 'int main()':
0_0_19212713_17923.cpp:7:19: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
 while(scanf('%s',s)!=EOF)
                   ^
In file included from 0_0_19212713_17923.cpp:1:0:
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_19212713_17923.cpp:9:28: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
 scanf('%lf %lf',&num,&price);
                            ^
In file included from 0_0_19212713_17923.cpp:1:0:
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_19212713_17923.cpp:13:22: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
 printf('%.1f\n',money);
                      ^
In file included from 0_0_19212713_17923.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:378:15: note: initializing argument 1 of 'int printf(const char*, ...)'
   int __cdecl printf(const char * __restrict__ _Format,...);
               ^


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