c语言问题

Question

Write a program using the given functions 用给定函数编写程序
Must use a structure type 必须使用结构类型

Answer 1

#include<stdio.h>
#include<stdlib.h>
#include<CONIO.H>
typedef struct String{
    char string[100];
}SqList;
int count = 0; //统计数据长度
void Print(SqList *L)
{
    for(int i=0;L->string[i]!='\0';i++){
        printf("%2c",L->string[i]);
    }
    printf("\n");
}
void Creat_List ( SqList *L )
{
        printf("Input a string:");
        scanf( "%s",&L->string);
}//录入数据完成
// 
void Count(SqList *L)
{
    count = 0;
    for(int i=0;L->string[i]!='\0';i++){
        count++;
    }
}

void LoopUp(SqList* L)
{   
    printf("Find a character :");
    char ch;
    int m=0;
    int i=0;
    Count(L);
    getchar();
    scanf( "%c",&ch);
    for(i = 0;i<count;)
    {

        if(ch == L->string[i]) //如果找到
        {
            i++;
            printf("%3c is in the list\n",ch);
            break;
        } else
        {
            i++;
            m++;   //m用来表示break的时候是否<=i
        }
    }
    if(m==i)
    {
        printf("%3c is not in the list\n",ch);
    }
}


int main ()
{
    int k;
     SqList L;
    while( 1 ){
        printf( "-------------------MENU-------------------\n" );
        printf( "1.String to list \n" );
        printf( "2.Show the list \n" );
        printf( "3.LoopUp  \n" );
        printf( "4.Count   \n" );
        printf( "5.Exit   \n" );
        printf("Choose the item(1~5):");
        scanf( "%d",&k );
        switch( k )
        {
            case 1:
                 {
                    Creat_List(&L);
                 }break;
            case 2:
                {
                    printf("List:");
                    Print(&L);
                }break;
            case 3:
                {
                    LoopUp(&L);
                }break;
            case 4:
                {
                    Count(&L);
                    printf("String length : %d\n",count);
                }break;
            case 5:
                exit(1);break;
            default:printf("Error");
        } 
    }
    return 0;
}

运行结果：
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):1
Input a string:abcdefg
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):2
List: a b c d e f g
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):3
Find a character :a
a is in the list
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):3
Find a character :z
z is not in the list
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):4
String length : 7
-------------------MENU-------------------
1.String to list
2.Show the list
3.LoopUp
4.Count
5.Exit
Choose the item(1~5):5
Press any key to continue