C语言中“不受限制”的字符串函数总结

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#include<string.h>
#include<iostream>
using namespace std;

int main()
{
	if ((strlen("abc") - strlen("abcdef")) > 0)
		cout << "大于" << endl;
	else
		cout << "小于" << endl;

	return 0;
}

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#include<string>
#include<iostream>
using namespace std;
int main()
{
	char arr[20] = "abcdefgh******";
	char* p = "hello world";
	strcpy(arr, p);
	cout << arr << endl;
	return 0;
}

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#include<string>
#include<iostream>
using namespace std;
int main()
{
	char arr[] = "abcde";
	char p[] = "abde";
	cout << strcmp(arr,p) << endl;

	return 0;
}

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int main()
{
	char arr[20] = "abcde ";
	char p[] = "hello";
	cout << strcat(arr, p) << endl;

	return 0;
}

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int main()
{
	char arr[] = "hello, how are you ?";
	char p[] = "are";
	cout << strstr(arr, p) << endl;

	return 0;
}

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int main()
{
	char str[] = "hello,how are you ?";
	char * p;
	p = strtok(str, ",?");
	while (p != NULL)
	{
		printf("%sn", p);
		p = strtok(NULL, ",?");
	}
	return 0;
}