Compilare: user.cpp: In function ‘void citire()’: user.cpp:21:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &n, &m); ^ user.cpp:23:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d", &pct[i]); ^ user.cpp:26:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &x, &y); ^ user.cpp:31:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &e[i].x, &e[i].y); ^ user.cpp: In function ‘int lca(int, int)’: user.cpp:46:12: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] return nod; ^ user.cpp: In function ‘void solutie()’: user.cpp:58:37: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] val=pct[lca(e[i].x, e[i].y)]; ^