Compilare: user.cpp: In function ‘int main()’: user.cpp:156:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&tip,&n,&m,&k); ^ user.cpp: In function ‘void solve1()’: user.cpp:53:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&x1,&y1,&x2,&y2); ^ user.cpp: In function ‘void solve2()’: user.cpp:80:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&v1[i].x1,&v2[i].y1,&v1[i].x2,&v2[i].y2); ^ user.cpp: In function ‘void solve1()’: user.cpp:68:35: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (L[i]<=ma-2 && l[i]<=ma-2 && i!=poz) ^