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POubuntu gcc error ctype was not declared in this scope
 

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  1. POubuntu gcc error ctype was not declared in this scope
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    <p>I encountered this problem today. I can compile the project using QT4 in ubuntu 12.04 yesterday, but today I find that any c++ project could not been compiled because of these errors. I have upgrade my system to the latest.</p> <p>Does anyone give me some advice, please? Thank you.</p> <pre><code>/usr/include/c++/4.6/bits/locale_facets.h:2561:50: error: ‘ctype_base’ has not been declared /usr/include/c++/4.6/bits/locale_facets.h:2543:14: note: suggested alternative: /usr/include/c++/4.6/bits/locale_classes.tcc:107:5: note: ‘std::use_facet’ /usr/include/c++/4.6/bits/locale_facets.h: At global scope: /usr/include/c++/4.6/bits/locale_facets.h:2566:5: error: ‘isdigit’ declared as an ‘inline’ variable /usr/include/c++/4.6/bits/locale_facets.h:2543:24: error: ‘ctype’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2566:5: error: template declaration of ‘bool isdigit’ /usr/include/c++/4.6/bits/locale_facets.h:2543:24: note: suggested alternative: /usr/include/c++/4.6/bits/locale_facets.h:2567:7: error: expected primary-expression before ‘return’ /usr/include/c++/4.6/bits/locale_facets.h:2567:7: error: expected ‘}’ before ‘return’/usr/include/c++/4.6/bits/localefwd.h:123:11: note: ‘std::ctype’ /usr/include/c++/4.6/bits/locale_facets.h:2567:75: error: expected declaration before ‘}’ token /usr/include/c++/4.6/bits/locale_facets.h:2543:36: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2543:38: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2543:47: error: request for member ‘is’ in ‘__loc’, which is of non-class type ‘const int’ /usr/include/c++/4.6/bits/locale_facets.h:2543:50: error: ‘ctype_base’ has not been declared /usr/include/c++/4.6/bits/locale_facets.h: At global scope: /usr/include/c++/4.6/bits/locale_facets.h:2548:31: error: ‘locale’ does not name a type /usr/include/c++/4.6/bits/locale_facets.h: In function ‘bool isupper(_CharT, const int&amp;)’: /usr/include/c++/4.6/bits/locale_facets.h:2549:14: error: ‘use_facet’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2549:14: note: suggested alternative: /usr/include/c++/4.6/bits/locale_classes.tcc:107:5: note: ‘std::use_facet’ /usr/include/c++/4.6/bits/locale_facets.h:2549:24: error: ‘ctype’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2549:24: note: suggested alternative: /usr/include/c++/4.6/bits/localefwd.h:123:11: note: ‘std::ctype’ /usr/include/c++/4.6/bits/locale_facets.h:2549:36: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2549:38: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2549:47: error: request for member ‘is’ in ‘__loc’, which is of non-class type ‘const int’ /usr/include/c++/4.6/bits/locale_facets.h:2549:50: error: ‘ctype_base’ has not been declared /usr/include/c++/4.6/bits/locale_facets.h: At global scope: /usr/include/c++/4.6/bits/locale_facets.h:2554:31: error: ‘locale’ does not name a type /usr/include/c++/4.6/bits/locale_facets.h: In function ‘bool islower(_CharT, const int&amp;)’: /usr/include/c++/4.6/bits/locale_facets.h:2555:14: error: ‘use_facet’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2555:14: note: suggested alternative: /usr/include/c++/4.6/bits/locale_classes.tcc:107:5: note: ‘std::use_facet’ /usr/include/c++/4.6/bits/locale_facets.h:2555:24: error: ‘ctype’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2555:24: note: suggested alternative: /usr/include/c++/4.6/bits/localefwd.h:123:11: note: ‘std::ctype’ /usr/include/c++/4.6/bits/locale_facets.h:2555:36: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2555:38: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2555:47: error: request for member ‘is’ in ‘__loc’, which is of non-class type ‘const int’ make[2]: *** /usr/include/c++/4.6/bits/locale_facets.h: At global scope: /usr/include/c++/4.6/bits/locale_facets.h:2560:31: error: ‘locale’ does not name a type /usr/include/c++/4.6/bits/locale_facets.h: In function ‘bool isalpha(_CharT, const int&amp;)’: /usr/include/c++/4.6/bits/locale_facets.h:2561:14: error: ‘use_facet’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2561:14: note: suggested alternative: /usr/include/c++/4.6/bits/locale_classes.tcc:107:5: note: ‘std::use_facet’ /usr/include/c++/4.6/bits/locale_facets.h:2561:24: error: ‘ctype’ was not declared in this scope /usr/include/c++/4.6/bits/locale_facets.h:2561:24: note: suggested alternative: /usr/include/c++/4.6/bits/localefwd.h:123:11: note: ‘std::ctype’ /usr/include/c++/4.6/bits/locale_facets.h:2561:36: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2561:38: error: expected primary-expression before ‘&gt;’ token /usr/include/c++/4.6/bits/locale_facets.h:2561:47: error: request for member ‘is’ in ‘__loc’, which is of non-class type ‘const int’ /usr/include/c++/4.6/bits/locale_facets.h:2561:50: error: ‘ctype_base’ has not been declared /usr/include/c++/4.6/bits/locale_facets.h: At global scope: /usr/include/c++/4.6/bits/locale_facets.h:2566:5: error: ‘isdigit’ declared as an ‘inline’ variable /usr/include/c++/4.6/bits/locale_facets.h:2566:5: error: template declaration of ‘bool isdigit’ /usr/include/c++/4.6/bits/locale_facets.h:2567:7: error: expected primary-expression before ‘return’ /usr/include/c++/4.6/bits/locale_facets.h:2567:7: error: expected ‘}’ before ‘return’ /usr/include/c++/4.6/bits/locale_facets.h:2567:75: error: expected declaration before ‘}’ token make[2]: *** </code></pre>
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    1. COReplace all `\u2018` and `\u2019` with `'` first please.
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      1. POubuntu gcc error ctype was not declared in this scope
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    2. COThank you. I have replace them.
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      1. POubuntu gcc error ctype was not declared in this scope
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    3. COThe problem is in `ctype` and `ctype_base`, what are they and where did you declare/define them? Are you sure you're trying to build the same code that built fine yesterday?
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      1. POubuntu gcc error ctype was not declared in this scope
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