| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <strstream> |
| |
| // class strstream |
| |
| // strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out); |
| |
| #include <strstream> |
| #include <cassert> |
| #include <string> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| char buf[] = "123 4.5 dog"; |
| std::strstream inout(buf, 0); |
| assert(inout.str() == std::string("123 4.5 dog")); |
| int i = 321; |
| double d = 5.5; |
| std::string s("cat"); |
| inout >> i; |
| assert(inout.fail()); |
| inout.clear(); |
| inout << i << ' ' << d << ' ' << s; |
| assert(inout.str() == std::string("321 5.5 cat")); |
| i = 0; |
| d = 0; |
| s = ""; |
| inout >> i >> d >> s; |
| assert(i == 321); |
| assert(d == 5.5); |
| assert(s == "cat"); |
| } |
| { |
| char buf[23] = "123 4.5 dog"; |
| std::strstream inout(buf, 11, std::ios::app); |
| assert(inout.str() == std::string("123 4.5 dog")); |
| int i = 0; |
| double d = 0; |
| std::string s; |
| inout >> i >> d >> s; |
| assert(i == 123); |
| assert(d == 4.5); |
| assert(s == "dog"); |
| i = 321; |
| d = 5.5; |
| s = "cat"; |
| inout.clear(); |
| inout << i << ' ' << d << ' ' << s; |
| assert(inout.str() == std::string("123 4.5 dog321 5.5 cat")); |
| } |
| |
| return 0; |
| } |