Compilare: user.cpp: In function ‘int main()’: user.cpp:85:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void citire()’: user.cpp:17:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.cpp:21:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j].x); ^