November 2016
Beginner to intermediate
816 pages
19h 58m
Japanese
Content preview from Cクイックリファレンス 第2版
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
750
21
章
GDB
でデバッグする
21.4.10
ウォッチポイント：変数への演算を監視する
GDBではウォッチポイントを設定することによって、変数の読み書きを監視できる。
ウォッチポイントはブレークポイントに似ているが、ソースコードの特定の行に限定されな
い。変数にウォッチポイントを設定すると、GDBは変数の値が変わるたびにプログラムを
停止する。実際、GDBは個々の変数だけでなく式も監視できる。さまざまな種類のウォッ
チポイントをコマンド
watch, rwatch, awatch
を使って設定できる。3つのコマンドはいず
れも同じ構文で行う。
watch
expression
デバッガは
expression
の値が変わるとプログラムを停止する。
rwatch
expression
デバッガは
expression
の評価に含まれるオブジェクトの値をプログラムが読むとプ
ログラムを停止する。
awatch
expression
デバッガは
expression
の評価に含まれるオブジェクトの値をプログラムが読むか変
更するとプログラムを停止する。
ウォッチポイントの普通の使い方はプログラムが変数を変更するときの監視だ。監視し
ている変数が変更されると、GDBは変数の旧値と新値、および次の実行文を含む行を表示
する。ウォッチポイントの使用を示すために、次の簡単なプログラムに基づく例を使う。
1 #include <stdio.h>
2
3 int main()
4 {
5 int a = 10;
6 int b = 20;
7 int* ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.