Compilare: user.cpp: In function ‘int main()’: user.cpp:22:64: warning: format ‘%d’ expects a matching ‘int*’ argument [-Wformat=] fscanf(f, "%d %d %d %d %d",&startx, &starty, &stopx, &stopy); ^ user.cpp:27:9: warning: unused variable ‘c’ [-Wunused-variable] int c=0; ^ user.cpp:16:28: 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:19:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^ user.cpp:22:65: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d %d",&startx, &starty, &stopx, &stopy); ^