C++学习笔记（7）

#include <stdio.h>
#include <string.h>

int main41()
{
//遍历字符串
const char* p = "wwesdsdasd";
int len = strlen(p);
printf("len=%d\n", len);
for (int i = 0; i < len; ++i)
{
printf("%c\n", *p++);
}
}

int main42()
{
//遍历字符串
const char* p = "wwesdsdasd";
while (*p)
{
printf("%c", *p++);
}
}

int main43()
{
//复制字符串
char p[] = "wqwerty";
char str[100] = {0};
strcpy(str, p);
printf("%s", str);
return 0;
}

int main44()
{
//格式化
char ch[100];
sprintf(ch, "hellozous");
printf("%s\n", ch);
sprintf(ch, "%d+%d=%d", 1, 2, 3);
printf("%s\n", ch);
}

#include <iostream>

using namespace std;

int main45()
{
//分割
char s[] = "www.baidu.com";
const char* delim = ".";
char* p = strtok(s, delim);
while (p)
{
cout << p << endl;
p = strtok(nullptr, delim);
}
}