Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:25:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ben.in","r",stdin); ^ user.cpp:26:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ben.out","w",stdout); ^ user.cpp:27:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:30:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&a,&b); ^ /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.a(malloc.o): In function `free': (.text+0x4ad0): multiple definition of `free' /tmp/ccAACshX.o:(.bss+0xc): first defined here /usr/bin/ld: Warning: size of symbol `free' changed from 4 in /tmp/ccAACshX.o to 140 in /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.a(malloc.o) /usr/bin/ld: Warning: type of symbol `free' changed from 1 to 2 in /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libc.a(malloc.o) collect2: error: ld returned 1 exit status