“expression must have a constant value”错误通常出现在编译时,意味着编译器期望一个表达式具有常量值,但实际上该表达式的值在编译时无法确定,或者在上下文中需要一个常量值而提供的是一个非常量表达式。 列举可能导致此错误的常见情况 使用非常量变量初始化全局变量或静态变量: c int x = 5; int y = x +...
下面的语句（第4行）有错：u16 rr=uy;错误的原因是定义变量的初始化值必须是常数，不能是变量，你可以修改为：u16 rr=9;
However, now I have an error now that I don't understand since my code is basically identical to the example. The error: src\main.c(170): error: #28: expression must have a constant value That section of code: void LSM303_read(uint8_t *m_buffer) { static app_twi_transfer_t cons...
After compiling I have an error: #28 expression must have a constant value. I do not know how to solve it. Can anyone help me ? STATUSswitch_stats_example( api_device_t *only_device ) { UINT8port1 = 1; sc_read_ctrs_in_tread_in = {RIO_ALL...
上面2个程序都会报错为:Error[Pe028]: expression must have a constant value --- 意思是...
I have used the trail and full Uvision3 ARM compiler. The following code produces the error 'expression must have a constant value' at the indicated position below
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\type_traits(2428): error: expression must have a constant value C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\xutility(385): error: expression must...
When a variable length array (C99 supported) is declared, and error: "expression must have a constant value" is raised. To Reproduce #include<stdio.h>intmain(void) {inti,n;printf("How many numbers do you want to reverse? ");scanf("%d",&n);inta[n];printf("Enter &d numbers: ",n...
在IAR环境中有下面的代码,会出现Error[Pe028]: expression must have aconstantvalue 错误,但是MDK的环境就不会出现,能有大神帮忙看一下 冰箱洗衣机2019-09-10 04:37:10 C++基础语法之volatile、assert()和sizeof() 中取值) const 可以是 volatile (如只读的状态寄存器) 指针可以是 volatileassert() 断言,是宏...
As the error message states, it must be a constant value.Do you actually declare your Menu...