Compilare: user.cpp: In function ‘double c2()’: user.cpp:123:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,sol=0,aux; ^ user.cpp: In function ‘void testeaza()’: user.cpp:188:12: warning: unused variable ‘a’ [-Wunused-variable] double a,b,c; ^ user.cpp:188:14: warning: unused variable ‘b’ [-Wunused-variable] double a,b,c; ^ user.cpp:188:16: warning: unused variable ‘c’ [-Wunused-variable] double a,b,c; ^ user.cpp: In function ‘int main()’: user.cpp:151:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d%lf",&test,&n,&k); ^ user.cpp:155:100: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%lf%lf%lf%lf%lf%lf",&t[i].a.x,&t[i].a.y,&t[i].b.x,&t[i].b.y,&t[i].c.x,&t[i].c.y); ^