Compilare: user.cpp: In function ‘int main()’: user.cpp:26:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("permutare2.in","r",stdin); ^ user.cpp:27:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("permutare2.out","w",stdout); ^ user.cpp:28:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m); ^ user.cpp:29:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:30:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(sir+1);////sar peste a doua linie ca este inutila ^ user.cpp:34:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ai); ^ user.cpp:13:26: warning: array subscript is below array bounds [-Warray-bounds] return ap[dr]-ap[st-1]; ^ user.cpp:9:24: warning: array subscript is below array bounds [-Warray-bounds] return s[dr]-s[st-1]; ^ user.cpp:9:24: warning: array subscript is below array bounds [-Warray-bounds] return s[dr]-s[st-1]; ^ user.cpp:13:26: warning: array subscript is below array bounds [-Warray-bounds] return ap[dr]-ap[st-1]; ^ /tmp/ccVPc3bP.o: In function `main': user.cpp:(.text.startup+0x7e): warning: the `gets' function is dangerous and should not be used.