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 19 int main() 20 { 21 { 22 char buf[] = "123 4.5 dog"; 23 std::strstream inout(buf, 0); 24 assert(inout.str() == std::string("123 4.5 dog")); 25 int i = 321; 26 double d = 5.5; 27 std::string s("cat"); 28 inout >> i; 29 assert(inout.fail()); 30 inout.clear(); 31 inout << i << ' ' << d << ' ' << s; 32 assert(inout.str() == std::string("321 5.5 cat")); 33 i = 0; 34 d = 0; 35 s = ""; 36 inout >> i >> d >> s; 37 assert(i == 321); 38 assert(d == 5.5); 39 assert(s == "cat"); 40 } 41 { 42 char buf[23] = "123 4.5 dog"; 43 std::strstream inout(buf, 11, std::ios::app); 44 assert(inout.str() == std::string("123 4.5 dog")); 45 int i = 0; 46 double d = 0; 47 std::string s; 48 inout >> i >> d >> s; 49 assert(i == 123); 50 assert(d == 4.5); 51 assert(s == "dog"); 52 i = 321; 53 d = 5.5; 54 s = "cat"; 55 inout.clear(); 56 inout << i << ' ' << d << ' ' << s; 57 assert(inout.str() == std::string("123 4.5 dog321 5.5 cat")); 58 } 59 } 60
