Compilare: user.cpp: In function ‘int legendre(int, int)’: user.cpp:12:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:19:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&m); ^ user.cpp:24:20: warning: ‘mx’ may be used uninitialized in this function [-Wmaybe-uninitialized] int d = 2, mx; ^