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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # 打印ASCII和寬字符字符串 ## 例子 #include <stdio.h> #include <wchar.h> int main(void) { char str1[] = "abcd"; wchar_t str2[] = L"abcd"; return 0; } ## 技巧 用gdb調試程序時,可以使用“`x/s`”命令打印ASCII字符串。以上面程序為例: Temporary breakpoint 1, main () at a.c:6 6 char str1[] = "abcd"; (gdb) n 7 wchar_t str2[] = L"abcd"; (gdb) 9 return 0; (gdb) x/s str1 0x804779f: "abcd" 可以看到打印出了`str1`字符串的值。 打印寬字符字符串時,要根據寬字符的長度決定如何打印。仍以上面程序為例: Temporary breakpoint 1, main () at a.c:6 6 char str1[] = "abcd"; (gdb) n 7 wchar_t str2[] = L"abcd"; (gdb) 9 return 0; (gdb) p sizeof(wchar_t) $1 = 4 (gdb) x/ws str2 0x8047788: U"abcd" 由于當前平臺寬字符的長度為4個字節,則用“`x/ws`”命令。如果是2個字節,則用“`x/hs`”命令。 參見[gdb手冊](https://sourceware.org/gdb/onlinedocs/gdb/Memory.html). ## 貢獻者 nanxiao
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