floats.c

c04_string/floats.c

@@ -0,0 +1,19 @@
+/* floats.c - 一些浮点型修饰符的组合 */
+#include <stdio.h>
+
+int main(void)
+{
+    const double RENT = 3852.99; // const变量（只读变量，不是常量）
+
+    printf("*%f*\n", RENT);
+    printf("*%e*\n", RENT);
+    printf("*%4.2f*\n", RENT);
+    printf("*%3.1f*\n", RENT);
+    printf("*%10.3f*\n", RENT);
+    printf("*%10.3E*\n", RENT);
+    printf("*%+4.2f*\n", RENT);
+    printf("*%+10.2f*\n", RENT);
+    printf("*%010.2f*\n", RENT);
+
+    return 0;
+}

c04_string/width.c

@@ -0,0 +1,14 @@
+/* width.c - 字段宽度 */
+#include <stdio.h>
+
+#define PAGES 959
+
+int main(void)
+{
+    printf("*%d*\n", PAGES);
+    printf("*%2d*\n", PAGES);
+    printf("*%10d*\n", PAGES);
+    printf("*%-10d*\n", PAGES);
+
+    return 0;
+}