注意！！！要严格区分单引号和双引号！单引号内只能是一个字符，而双引号是字符数组
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main()
{
   char mystr[]="猴子和我一起来，我和猴子一样帅";
   gets(mystr);
      system("pause");  
   return EXIT_SUCCESS;   
}

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char cpc[10] = { 0 };
    char cj[10] = { 0 };
    printf("%p\n",cpc);
    printf("%p\n", cj);
    fgets(cpc, sizeof(cpc), stdin);
    printf("%s\n", cpc);
    system("pause");
}

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

int main()
{
    char wenwa[]="cpc";
    printf("%-5s",wenwa);
  　printf("%5s",wenwa);
    system("pause"); 
    return EXIT_SUCCESS;
}

int main()
{
   char wenwa[]="sunshine is lady rock you like a baby";
   int mylen = strlen(wenwa);
   printf("%d\n",mylen);
   printf("%d\n",sizeof(wenwa));    
   system("pause");  
   return EXIT_SUCCESS;   
}

char target[];
char src[];
if （strcpy(target,src)!=NULL）
{
     
}

int main()
{
     char mywords[]="喜欢陈培昌";
     char hiswords[];
     strcnpy(hiswords,mywords);
     hiswords[5]=0;
     printf(hiswords);
     return EXIT_SUCCESS;  
}

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

int main()
{
   char myarr[] ={0};
   char myarr2[]={0};
   gets(myarr);
   gets(myarr2);
   printf(strcat(myarr,myarr2));
   system("pause");
   return EXIT_SUCCESS;  
}

int main()
{
    
    char myarr[8] = { 0 };
    char myarr2[10]={ 0 };
    gets(myarr);
    gets(myarr2);
    strncat(myarr, myarr2, sizeof(myarr)-strlen(myarr) - 1);
    puts(myarr);
    system("pause");
    return EXIT_SUCCESS;
}

strstr (a,"345")---查找字符串，找不到，返回NULL

strtok() 分割字符串

char *p = strtok();

printf(p)

char wenwa[] ="789";
printf(atoi(wenwa));

wenwa是char数组
atoi()把数组转换为整数，两者地址不一样

char mynum[] = "456";

(mynum[0]-0x30)*1000;
+
(mynum[1]-0x30)*100;
+
(mynum[2]-0x30)*10;

#include <stdio.h>
#include <stdlib.h>

int main()
{
   int mynum[]={43,88,56,24,78,12,8}; 
   return EXIT_SUCCESS;
}