vault backup: 2026-01-23 16:41:34

2026-01-23 16:41:34 +08:00
parent d3bcc29692
commit bb68a0323d
2 changed files with 12 additions and 5 deletions
--- a/Collection/连~都忘记了的C语言小知识.md
+++ b/Collection/连~都忘记了的C语言小知识.md
@@ -4,3 +4,10 @@ tags:
 aliases: empty
 日期: 2026/1/23
 ---
+- 字符转数字要 `-'0'`
+```c
+	char arr[10];
+	for(int i = 0;i < strlen(arr);i++)
+		num = num * 10 + arr[i] - '0';
+```
+-