警告信息 "warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]" 的含义是:你在使用 scanf 函数时忽略了它的返回值,而 scanf 函数被声明为具有 warn_unused_result 属性,这意味着编译器希望开发者能够使用并检查这个函数的返回值。 为什么编译器会产生...
今天,我在PTA里面刷题的时候,碰到了这样的情况 warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result 其实,当时,我写了这样的代码 #include<stdio.h> intmain(){ intN; scanf("%d", &N); N++; inta[10][10] = {0}; a[0][0] =1, a[1][0] =1, a[1...
PAT之warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] 做题的时候突然出现的,之前用的时候没有出现,遇到感觉有点懵 原因:忽略了scanf();的返回值 查了一下解决方法: 1、强制忽略scanf的返回值 (void)scanf(); 2:加判断...
pat A1025题报错warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attrib... 错误分析:没有仔细阅读题目,导致输出的结果各个参数的顺序不对,导致pat的报错原因。 收获;要熟读题目不能将计算机想象成人一样具有能自动识别的能力。 错误原因 将printf("%d %d %d\n",r,stu[...
warning: ignoring return value of ‘realloc’, declared with attribute warn_unused_result [-Wunused-result] realloc(usr, sizeof(char) * strlen(usr)); ^~~~ warning: ignoring return value of ‘realloc’, declared with attribute warn_unused_result [-Wunused-result] realloc(pwd, sizeof(char...
if (get_IdResult != NULL) { *get_IdResult = id; } else { return E_POINTER; } GiovanniThursday, September 29, 2011 10:18 PMWe need to see how you are calling get_Id. The usual method would beWCHAR *ptr;get_Id(&ptr);Français...
-Warc-maybe-repeated-use-of-weak "weak %select{variable|property|implicit property|instance variable}0 %1 may be accessed multiple times in this %select{function|method|block|lambda}2 and may be unpredictably set to nil assign to a strong variable to keep the object alive -Warc-non-pod-mema...
PAT1006题 warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&input); 2019-04-21 22:36 −... NullPoint_02 0 10345 Result Maps collection already contains value for com.shop.dao.CartMapper.BaseResultMap ...
a.c:5:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wun 2018-04-15 10:44 − ... 路明天 0 4503 相关推荐 SpringMVC访问出错No converter found for return value of type 2019-12-12 22:55 − 在使用SSM整合的时候,spring mvc 添加@Response...
warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&f); 这个是C语言当中常见的错误,意思是 对于输入的scanf参数的内容,没有进行类型判断,所以才会产生这个问题. 解决方法: 1、添加if判断方式...