1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <strstream> 11 12 // class strstream 13 14 // strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out); 15 16 #include <strstream> 17 #include <cassert> 18 #include <string> 19 20 int main() 21 { 22 { 23 char buf[] = "123 4.5 dog"; 24 std::strstream inout(buf, 0); 25 assert(inout.str() == std::string("123 4.5 dog")); 26 int i = 321; 27 double d = 5.5; 28 std::string s("cat"); 29 inout >> i; 30 assert(inout.fail()); 31 inout.clear(); 32 inout << i << ' ' << d << ' ' << s; 33 assert(inout.str() == std::string("321 5.5 cat")); 34 i = 0; 35 d = 0; 36 s = ""; 37 inout >> i >> d >> s; 38 assert(i == 321); 39 assert(d == 5.5); 40 assert(s == "cat"); 41 } 42 { 43 char buf[23] = "123 4.5 dog"; 44 std::strstream inout(buf, 11, std::ios::app); 45 assert(inout.str() == std::string("123 4.5 dog")); 46 int i = 0; 47 double d = 0; 48 std::string s; 49 inout >> i >> d >> s; 50 assert(i == 123); 51 assert(d == 4.5); 52 assert(s == "dog"); 53 i = 321; 54 d = 5.5; 55 s = "cat"; 56 inout.clear(); 57 inout << i << ' ' << d << ' ' << s; 58 assert(inout.str() == std::string("123 4.5 dog321 5.5 cat")); 59 } 60 } 61
