Compilare: user.cpp: In function ‘int solve(double)’: user.cpp:30: warning: comparison between signed and unsigned integer expressions user.cpp:34: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:74: warning: format ‘%Lf’ expects type ‘long double*’, but argument 4 has type ‘double*’ user.cpp:85: warning: format ‘%.2Lf’ expects type ‘long double’, but argument 2 has type ‘double’ user.cpp:67: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:68: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:70: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:74: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result