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#include
     
      int main(){    int a[5]={
   1,2,3,4,5};    int i=0;        for(i=0;i<=5;i++){        printf("%d\n",a[i]);        if(i==4){            printf(",");        }            }     putchar("\n"); }
     

#include
      
       int main(){    int arry[3][4]={
    {
    1,2,3,4},{
    5,6,7,8},{
    0,0,0,9}};    int i,j=0;    for(i=0;i<3;i++){        for(j=0;j<4;j++){            printf("arry[%p][%p]=%p",j,j,arry[i][j]);        }        printf("\n");    }            }
      

 

#include
      
       int main(){    /*int i=0;    int a[10]={'H','e','l','l','o'};    printf("%ld\n",sizeof(a));    char b[10]="hello";    memset(b,'a',10);  //覆盖字符函数     for(i=0;i<10;i++){        printf("%c\n",b[i]);    }    int length=strlen(b);  //字符长度函数     printf("length=%d\n",length);    */    char x[]="123";    char y[]="12";    char z[20]="";     int diff=strcmp(x,y);  //字符比较函数     printf("%d\n",diff);        //strcpy(z,y);              //字符复制函数     //printf("z=%s\n",z);    strncpy(z,x,1);    printf("z=%s\n",z);        //字符复制函数升级版     strcat(x,y);             //字符拼接函数     printf("x=%s\n",x);            /*    if(diff>=0){        printf("x>y");    }else if(diff<0){        printf("x
      

#include
      
       int funX(int a,int b){    return a+b;}int main(){        funX(1,2);}
      

 

 

 

 

 

 

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