There was a left over.

document.yaml

@@ -39,5 +39,6 @@ sections:
   - { path: 'section/lst36.tex', newpg: true }
   - { path: 'section/lst37.tex', newpg: true }
   - { path: 'section/lst38.tex', newpg: true }
-  - { path: 'section/abs.tex', newpg: false }
+  - { path: 'section/abs.tex', newpg: true }
+  - { path: 'section/abs-floating.tex', newpg: false }
 

main.tex

@@ -44,6 +44,9 @@
     \newpage
 
     \input{section/abs.tex}
+    \newpage
+
+    \input{section/abs-floating.tex}
 
     \compiledTime
 \end{document}

programs/abs-floating/info.json

@@ -0,0 +1,10 @@
+{
+  "language": "C",
+  "name": "演習課題2 浮動小数点数版",
+  "description": "倍精度浮動小数点数を読み込み、その絶対値を出力するプログラム。",
+  "output": {
+    "type": "screenshot",
+    "content": "./assets/abs-floating.png"
+  },
+  "note": ""
+}

programs/abs-floating/main.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+int main(void) {
+    double x, y;
+
+    printf("Input floating point: ");
+    scanf("%lf", &x);
+
+    y = x;
+
+    if (y < 0.0)
+        y = -y;
+
+    printf("Absolute value of %lf is %lf.\n", x, y);
+
+    return 0;
+}

section/abs-floating.tex

@@ -0,0 +1,13 @@
+\section{演習課題2 浮動小数点数版}
+
+倍精度浮動小数点数を読み込み、その絶対値を出力するプログラム。
+
+\subsection{コードリスティング}
+
+\lstinputlisting[language=C,title={演習課題2 浮動小数点数版}]{../programs/abs-floating/main.c}
+
+\subsection{実行結果}
+
+\begin{center}
+ \includegraphics[width=\textwidth]{./assets/abs-floating.png}
+\end{center}