#include<stdio. h> oid main( char *str1="Good morning! char str2 [="Have a good time char str3 1401, str4 printf("请输入字符串str3:mn") gets(str3); printf(“各字符串长度为:n) printf("strl:%dn", strlen(str1),/*用字符指针调用* printf("str2:%dn", strlen(st2),/*用字符数组名调用* printf("str3: %d\n", strlen(str3)), str4= strlen(" You are so fine!"),/用字符串本身调用* printf("str4: %d\n", str4)#include<stdio.h> #include<string.h> void main() { char *str1="Good morning!"; char str2 []="Have a good time!"; char str3 [40],str4; printf("请输入字符串 str3：\n"); gets(str3); printf(“各字符串长度为：\n”); printf("str1：%d\n",strlen(str1)); /*用字符指针调用*/ printf("str2：%d\n",strlen(str2)); /*用字符数组名调用*/ printf("str3：%d\n",strlen(str3)); str4=strlen("You are so fine! "); /*用字符串本身调用*/ printf("str4：%d\n",str4); }