Compilare: user.cpp: In function ‘int main()’: user.cpp:41:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:43:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i][0]); ^ user.cpp:79:28: warning: ‘st’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(v[x][1]==v[ind][1]){ ^ user.cpp:61:18: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol++; ^