Compilare: main.cpp: In function 'int divide(const int&, const int&)': main.cpp:58:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=lower;i<=upper;i++) ^~~ main.cpp:61:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' quicksort(b,1,gg); ^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ main.cpp:74:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&a[i].x,&a[i].y); ^