Compilare: user.cpp: In function ‘soleqgrad2 eqSolver(double, double, double)’: user.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘double intersectie(cerc, cerc)’: user.cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:103:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cercuri.in","r",stdin); ^ user.cpp:104:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cercuri.out","w",stdout); ^ user.cpp:109:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:114:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf%lf",&aux1,&aux2,&aux3); ^