c语言atoll函数怎么用_C ++中带有示例的atoll()函数
c語言atoll函數怎么用
C ++ Atoll()函數 (C++ atoll() function)
atoll() function is a library function of cstdlib header. It is used to convert the given string value to the integer value. It accepts a string containing an integer (integral) number and returns its long long long integer value.
atoll()函數是cstdlib標頭的庫函數。 它用于將給定的字符串值轉換為整數值。 它接受包含整數(整數)的字符串,并返回其long long long整數值。
Syntax of atoll() function:
atoll()函數的語法:
C++11:
C ++ 11:
long long int atoll (const char * str);Parameter(s):
參數:
str – represents a string containing an integer (integral) number.
str –表示包含整數(整數)的字符串。
Return value:
返回值:
The return type of this function is long long int, it returns the long long long integer converted value.
此函數的返回類型為long long int ,它返回long long long long整數轉換后的值。
Example:
例:
Input:str = "123456789012345";Function call:atoll(str);Output:123456789012345C ++代碼演示atoll()函數示例 (C++ code to demonstrate the example of atoll() function)
// C++ code to demonstrate the example of // atoll() function#include <iostream> #include <cstdlib> #include <string.h> using namespace std;// main() section int main() {char str[50];strcpy(str, "123456789");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;strcpy(str, "-123456789");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;strcpy(str, "0");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;strcpy(str, "9876543120");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;strcpy(str, "-9876543120");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;strcpy(str, "123456789012345");cout << "atoll(\"" << str << "\"): " << atoll(str) << endl;return 0; }Output
輸出量
atoll("123456789"): 123456789 atoll("-123456789"): -123456789 atoll("0"): 0 atoll("9876543120"): 9876543120 atoll("-9876543120"): -9876543120 atoll("123456789012345"): 123456789012345Reference: C++ atoll() function
參考: C ++ atoll()函數
翻譯自: https://www.includehelp.com/cpp-tutorial/atoll-function-with-example.aspx
c語言atoll函數怎么用
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