请允许我指出,我有这样的原型:int func(int * a)
,并且接受一个阵列作为理由。
如果没有汇编者显示各地的错误,我怎么做呢?
请允许我指出,我有这样的原型:int func(int * a)
,并且接受一个阵列作为理由。
如果没有汇编者显示各地的错误,我怎么做呢?
你们都需要的是<条码><>。
#include <iostream>
static void f (int* a) {
while (*a) std::cout << *a++ << "
" ;
}
int main() {
f ((int[]){1,2,3,4,0}) ;
}
守则产出
1
2
3
4
It works in C too -- see this ideone link.
www.un.org/Depts/DGACM/index_spanish.htm 增补: 页: 1 关于这一建筑的合法性的新问题,以及Mat s的回答,如果你对此类事情有兴趣的话,值得阅读。 简言之,这似乎只在C99有效,但一些汇编者允许它作为所有C/C++变量的延伸。
与此类似:
int func(int * a);
void somewhere_else()
{
int arr[4] = { 1, 1, 1, 1 };
func(arr);
}
承诺使用原始阵列,当然不会给它们留下任何转子。 Ew! 我们再说不了1975年。
#include <cstddef>
#include <iostream>
#include <vector>
void func(std::vector<int> const& v) {
for (std::size_t i = 0; i < v.size(); i++)
std::cout << v[i] << " ";
}
int main() {
func({ 1, 2, 3, 4 });
}
// Output: "1 2 3 4 "
这就需要一名符合C++11某些特征的汇编员。 姓名为初步编制者名单。
int func(std::initializer_list<int> a) {
// do something with a here
}
或者,你可以书写一个使用<代码>的包装材料:初始器_list。 (如果出于某种原因,你不能改变原来的职能):
int func_wrapper(std::initializer_list<int> a) {
std::vector<int> b = a;
func(b.data());
}
这样做的一个途径是
#include <iostream>
#include <stdio.h>
void abc (int *a,int z)
{
int m= z/sizeof(*a);
for(int i=0;i<m;i++)
{
std::cout<<"values " <<*a<<"
";
a++;
}
}
int main()
{
int ar[]={11,12,13,14,15,1166,17};
std::cout << sizeof(ar)<<"size
";
abc(ar,sizeof(ar));
getchar();
}
here in this case you dont need to worry about size and all. In case of int ar[3]={1,2,3} that will give junk values if you try and search for NULL as the third place is occupied by element 3
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