Compilare: main.cpp: In function 'int dfs(int)': main.cpp:17:16: warning: statement has no effect [-Wunused-value] viz[next]==1; ~~~~~~~~~^~~ main.cpp:22:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:31:22: warning: spurious trailing '%' in format [-Wformat=] fscanf(fin,"%d%",&n); ^ main.cpp:30:19: warning: unused variable 'j' [-Wunused-variable] int n,a,b,i,MAX,j; ^ main.cpp:31:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%",&n); ^ main.cpp:33:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^ main.cpp:36:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^