Compilare: user.cpp: In function ‘void findpoints()’: user.cpp:108:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < P[niv].size() ; ++i ){ ^ user.cpp:110:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < P[niv].size() ; ++j ){ ^ user.cpp:126:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < P[1].size() ; ++i ){ ^ user.cpp: In function ‘void rec(int, int)’: user.cpp:142:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < P[h].size() ; ++i ){ ^ user.cpp: In function ‘void citire()’: user.cpp:37:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lf %lf %d",&A[1].x,&A[1].y,&n); B[1] = A[1]; ++n; nrrms = n; ^ user.cpp:39:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lf %lf %d",&A[i].x,&A[i].y,&A[i].ind); ^ user.cpp: In function ‘int main()’: user.cpp:60:21: warning: ‘xmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] X[i].ctg = (X[i].x-xmin) / (X[i].y-ymin); ^ user.cpp:51:20: note: ‘xmin’ was declared here double ymin = INF,xmin; int poz; ^ user.cpp:58:17: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] pct aux = X[poz]; X[poz] = X[1]; X[1] = aux; ^ user.cpp:51:30: note: ‘poz’ was declared here double ymin = INF,xmin; int poz; ^