Compilare: user.cpp: In function ‘void Adun(int*, int*)’: user.cpp:49:15: warning: unused variable ‘i’ [-Wunused-variable] int t = 0,i; ^ user.cpp: In function ‘int main()’: user.cpp:80:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("largestroot.in", "r", stdin); ^ user.cpp:81:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("largestroot.out", "w", stdout); ^ user.cpp:82:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &T); ^ user.cpp:85:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:96:20: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(b); ^ /tmp/ccU0nkPL.o: In function `main': user.cpp:(.text.startup+0x12b): warning: the `gets' function is dangerous and should not be used.