Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:57:16: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive] else printf('0'); ^ In file included from /usr/include/stdio.h:934:0, from /usr/include/c++/4.8/cstdio:42, from user.cpp:2: /usr/include/i386-linux-gnu/bits/stdio2.h:103:1: error: initializing argument 1 of ‘int printf(const char*, ...)’ [-fpermissive] printf (__const char *__restrict __fmt, ...) ^ user.cpp:29:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 220000, stdin); ^ user.cpp: In function ‘void read(long long int&)’: user.cpp:12:124: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] while((buff[pos] < '0' || buff[pos] > '9')&&buff[pos]!='-') if(++pos == 220000) fread(buff, 1, 220000, stdin), pos = 0; ^ user.cpp:18:67: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++pos == 220000) fread(buff, 1, 220000, stdin), pos = 0; ^