系统编程文件部分

Chapter13/io/stdio/atoi.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+    char buf[1024];
+    int  year = 2014, month = 5, day = 13;
+
+    printf("%d-%d-%d\n", year, month, day);
+
+    sprintf(buf, "%d-%d-%d", year, month, day);
+    puts(buf);
+
+#if 0
+    char str[] = "123456";
+
+    printf("%d\n", atoi(str));
+    /**
+     * 输出 123456
+     * 
+     * 如果str是123a456
+     * 输出123
+     * 
+     */
+#endif
+
+    exit(0);
+}