Компилятор не может обработать даже самый простой l oop
#include <iostream>
using namespace::std;
int main()
{
for( int i = 0, char a = 'A'; i <= 26; i++, a++ )
cout << "OK, lets try. Showing values: i = "
<< i << ", a = " << a << endl;
}
Компилятор говорит следующее:
prog.cpp: In function ‘int main()’:
prog.cpp:7:18: error: expected unqualified-id before ‘char’
prog.cpp:7:18: error: expected ‘;’ before ‘char’
prog.cpp:7:39: error: expected ‘)’ before ‘;’ token
prog.cpp:7:41: error: name lookup of ‘i’ changed for ISO ‘for’ scoping [-fpermissive]
prog.cpp:7:41: note: (if you use ‘-fpermissive’ G++ will accept your code)
prog.cpp:7:46: error: ‘a’ was not declared in this scope
prog.cpp:7:50: error: expected ‘;’ before ‘)’ token
И да, я знаю, что могу инициализировать 'i' и «а» перед l oop. Итак, давайте попробуем:
#include <iostream>
using namespace::std;
int main()
{
int i = 0;
for(i = 0, char a = 'A'; i <= 26; i++, a++ )
cout << "OK, lets try. Showing values: i = "
<< i << ", a = " << a << endl;
}
Компилятор говорит:
prog.cpp: In function ‘int main()’:
prog.cpp:8:13: error: expected primary-expression before ‘char’
prog.cpp:8:13: error: expected ‘;’ before ‘char’
prog.cpp:8:41: error: ‘a’ was not declared in this scope
Когда используется опция -std = c ++ 11:
prog.cpp: In function ‘int main()’:
prog.cpp:7:17: error: expected unqualified-id before ‘char’
prog.cpp:7:17: error: expected ‘;’ before ‘char’
prog.cpp:7:38: error: expected ‘)’ before ‘;’ token
prog.cpp:7:40: error: ‘i’ was not declared in this scope
prog.cpp:7:45: error: ‘a’ was not declared in this scope
prog.cpp:7:49: error: expected ‘;’ before ‘)’ token
Последняя:
#include <iostream>
using namespace::std;
int main()
{
int i = 0;
char a = 'A';
for(i = 0, a = 'A'; i <= 26; i++, a++ )
cout << "OK, lets try. Showing values: i = "
<< i << ", a = " << a << endl;
}
Работает нормально. Ребята, я слепой или что? Может быть, вам нужна моя версия арки и компилятора:
uname -a
Linux freelancer 3.2.0-4-686-pae #1 SMP Debian 3.2.63-2+deb7u2 i686 GNU/Linux
g++ --version
g++ (Debian 4.7.2-5) 4.7.2