Compilare: user.cpp: In function ‘int rez(int, int)’: user.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:43:8: warning: unused variable ‘j’ [-Wunused-variable] {int i,j,a,b,l,l1=0; ^ user.cpp:44:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d",&m,&n,&a,&b); ^ user.cpp:46:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x[i],&l); ^