Compilare: user.cpp: In function ‘void coboara(int)’: user.cpp:10:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (nod*2<=n) fiu=nod*2; ^ user.cpp:12:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (nod*2+1<=n&&v[fiu+1]<v[fiu]) fiu=fiu+1; ^ user.cpp: In function ‘int main()’: user.cpp:28:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=n;i++) {fscanf(f,"%d",&v[i]); ^ user.cpp:31:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<=n;i++) {fprintf(g,"%d ",v[1]); ^ user.cpp:27:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:28:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=n;i++) {fscanf(f,"%d",&v[i]); ^