<style>

html, body, .ui-content {
background-color: #333;
color: #ddd;
}

body > .ui-infobar {
display: none;
}

.ui-view-area > .ui-infobar {
display: block;
}

.markdown-body h1{
color: #9CCEF2;
}
.markdown-body h2,
.markdown-body h3{
color: #B1D6CA;
}
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
color: #ddd;
}

.markdown-body h1,
.markdown-body h2 {
border-bottom-color: #ffffff69;
}

.markdown-body h1 .octicon-link,
.markdown-body h2 .octicon-link,
.markdown-body h3 .octicon-link,
.markdown-body h4 .octicon-link,
.markdown-body h5 .octicon-link,
.markdown-body h6 .octicon-link {
color: #fff;
}

.markdown-body img {
background-color: transparent;
}

.ui-toc-dropdown .nav>.active:focus>a, .ui-toc-dropdown .nav>.active:hover>a, .ui-toc-dropdown .nav>.active>a {
color: white;
border-left: 2px solid white;
}

.expand-toggle:hover,
.expand-toggle:focus,
.back-to-top:hover,
.back-to-top:focus,
.go-to-bottom:hover,
.go-to-bottom:focus {
color: white;
}

.ui-toc-dropdown {
background-color: #333;
}

.ui-toc-label.btn {
background-color: #191919;
color: white;
}

.ui-toc-dropdown .nav>li>a:focus,
.ui-toc-dropdown .nav>li>a:hover {
color: white;
border-left: 1px solid white;
}

.markdown-body blockquote {
color: #bcbcbc;
}

.markdown-body table tr {
background-color: #5f5f5f;
}

.markdown-body table tr:nth-child(2n) {
background-color: #4f4f4f;
}

.markdown-body code,
.markdown-body tt {
color: #eee;
background-color: rgba(230, 230, 230, 0.36);
}

a,
.open-files-container li.selected a {
color: #5EB7E0;
}

</style>

###### tags: `tgirc早修book`

# Ch.00 題目練習

## 輸出

<font color="FEA0A0">**題目**</font>
1. [Zerojudge d483: hello, world](https://zerojudge.tw/ShowProblem?problemid=d483)

:::spoiler <font color="FEA0A0">**題解**</font>
1. [Zerojudge d483: hello, world](https://zerojudge.tw/ShowProblem?problemid=d483)

#include <iostream>
using namespace std;

int main(){
    cout<<"hello, world";
    return 0;
}

單純的輸出而已，有錯的可能是輸出的格式錯誤。
可以直接複製範例測資，就能確保格式正確了。
:::

## 輸入

<font color="FEA0A0">**題目**</font>
1. [Zerojudge a001: 哈囉](https://zerojudge.tw/ShowProblem?problemid=a001)

:::spoiler <font color="FEA0A0">**題解**</font>
1. [Zerojudge a001: 哈囉](https://zerojudge.tw/ShowProblem?problemid=a001)

#include <iostream>
using namespace std;

int main(){
    string s;
    cin>>s;
    cout<<"hello, "<<s<<"\n";
    return 0;
}

相較於上題多了個輸入，透過 string 宣告一個字串 s，再進行輸入即可。
輸出時先輸出題目要求的 `hello, `，再輸出裝載輸入訊息的變數 s
:::