Compilare: user.cpp: In function ‘int main()’: user.cpp:114:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plus2.in","r",stdin); ^ user.cpp:115:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plus2.out","w",stdout); ^ user.cpp:117:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:119:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp: In function ‘void adun()’: user.cpp:17:73: warning: ‘dimrez’ may be used uninitialized in this function [-Wmaybe-uninitialized] int dima=stiva[k].dim,dimb=stiva[k-1].dim,i,j,maxim=-1,x,y,nr,match,dimrez,rest,ok; ^