Compilare: user.cpp: In function ‘void kruskal(muchie*, int*, int, int)’: user.cpp:55:17: warning: unused variable ‘k’ [-Wunused-variable] int set1, set2,k; ^ user.cpp: In function ‘int main()’: user.cpp:89:6: warning: unused variable ‘i’ [-Wunused-variable] int i,nrNoduri=0; ^ user.cpp:91:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp, "%d%d", &x, &y); ^