Compilare: main.cpp:34:65: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((optimize(0)))__attribute__((always_inline)) void putChar(const char &C) { ^~~~~~~ main.cpp:25:65: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((optimize(0)))__attribute__((always_inline)) void getChar(char &nr) ^~~~~~~ main.cpp:15:65: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((optimize(0)))__attribute__((always_inline)) void read(int &nr) ^~~~ main.cpp: In function 'void read(int&)': main.cpp:17:102: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] while(!isdigit(buff[pos])) if(++pos == buff_size) fread(buff,1,buff_size,stdin), pos = 0, pos = 0; ^ main.cpp:22:70: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if(++pos == buff_size) fread(buff,1,buff_size,stdin), pos = 0; ^ main.cpp: In function 'void getChar(char&)': main.cpp:27:93: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] while(!isdigit(buff[pos])) if(++pos == buff_size) fread(buff,1,buff_size,stdin), pos = 0; ^ main.cpp:29:66: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if(++pos == buff_size) fread(buff,1,buff_size,stdin), pos = 0; ^ main.cpp: In function 'int main()': main.cpp:45:40: 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,buff_size,stdin), pos = 0; ^ In file included from /usr/include/stdio.h:936:0, from main.cpp:2: In function 'size_t fread(void*, size_t, size_t, FILE*)', inlined from 'void read(int&)' at main.cpp:17:102: /usr/include/bits/stdio2.h:293:71: warning: call to '__fread_chk_warn' declared with attribute warning: fread called with bigger size * nmemb than length of destination buffer return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); ^ In function 'size_t fread(void*, size_t, size_t, FILE*)', inlined from 'void read(int&)' at main.cpp:22:70: /usr/include/bits/stdio2.h:293:71: warning: call to '__fread_chk_warn' declared with attribute warning: fread called with bigger size * nmemb than length of destination buffer return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); ^ In function 'size_t fread(void*, size_t, size_t, FILE*)', inlined from 'void getChar(char&)' at main.cpp:27:93: /usr/include/bits/stdio2.h:293:71: warning: call to '__fread_chk_warn' declared with attribute warning: fread called with bigger size * nmemb than length of destination buffer return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); ^ In function 'size_t fread(void*, size_t, size_t, FILE*)', inlined from 'void getChar(char&)' at main.cpp:29:66: /usr/include/bits/stdio2.h:293:71: warning: call to '__fread_chk_warn' declared with attribute warning: fread called with bigger size * nmemb than length of destination buffer return __fread_chk_warn (__ptr, __bos0 (__ptr), __size, __n, __stream); ^