std :: max在头文件
- 它比较在其参数中传递的两个数字,并返回两个中较大的一个,如果两个相等,则返回第一个。
- 它还可以使用二进制函数比较两个数字,该函数由用户预先定义,然后作为参数传递给std :: max()。
- 如果我们想在给定列表中找到最大的元素,它也很有用;如果列表中存在多个元素,它会返回第一个元素。
这三个版本定义如下:
- 使用“
句法:
template constexpr const T& max (const T& a, const T& b); Here, a and b are the numbers to be compared. Returns: Larger of the two values.
CPP
// C++ program to demonstrate the use of std::max // C++ program to demonstrate the use of std::max #include
#include using namespace std; int main() { // Comparing ASCII values of a and b cout << std::max('a','b') << "\n"; // Returns the first one if both the numbers // are same cout << std::max(7,7); return 0; }
Python3
# Python 3 program to # demonstrate the use of std::max # Comparing ASCII # values of a and b print(max('a','b')) # Returns the first # one if both the numbers # are same print(max(7, 7)) # This code is contributed by # Smitha Dinesh Semwal
输出:
b 7
- 为了使用预定义的函数比较元素:
句法:
template constexpr const T& max (const T& a, const T& b, Compare comp); Here, a and b are the numbers to be compared. comp: Binary function that accepts two values of type T as arguments, and returns a value convertible to bool. The value returned indicates whether the element passed as f irst argument is considered less than the second. The function shall not modify any of its arguments. This can either be a function pointer or a function object. Returns: Larger of the two values.
// C++ program to demonstrate the use of std::max #include
#include using namespace std; // Defining the binary function bool comp(int a, int b) { return (a < b); } int main() { int a = 7; int b = 28; cout << std::max(a,b,comp) << "\n"; // Returns the first one if both the numbers // are same cout << std::max(7,7,comp); return 0; } 输出:
28 7
- 在列表中查找最大元素:
句法:
template constexpr T max (initializer_list il, Compare comp); Here, comp is optional and can be skipped. il: An initializer_list object. Returns: Largest of all the values.
// C++ program to demonstrate the use of std::max #include
#include using namespace std; // Defining the binary function bool comp(int a, int b) { return (a < b); } int main() { // Finding the largest of all the numbers cout << std::max({1, 2, 3, 4, 5, 10, -1, 7},comp) << "\n"; return 0; } 输出:
10
相关文章:
- std :: max_element
- std :: min
- std ::等于
- C++中的std :: min_element
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