• 打印字符串：%s--------printf(“%s”,”abcd”);
• 打印字符串數組中某一位：%c--------printf(“%c”,”abcd[2]”);
• 字符的定義及打印格式：

struct
    {
        int amount;
        char *name;
    }coins[] = 
    {
    {1,"one"},
    {2,"two"},
    {3,"three"}
    };

    char *abc="zxcvbnm";
    printf("%s\n",coins[2].name);
    printf("%s"
 
,abc);

• 字符串數組初始化；

char s1[]="array";  //字符數組

char s2[6]="array";  //數組長度=字符串長度+1，因為字符串末尾會自動添‘\0‘

printf("%s,%c\n",s1,s2[2]);  //array，r

• 字符串指針初始化；

char *sp="pointer";  //字符指針

printf("%s,%c,%c\n",sp,*sp,*(sp+2));  //pointer,p,i

• 數組+scanf

char s1[6];    

scanf("%s\n",s1);

printf("%s,%c\n",s1,s1[2]);  //array，r
 

• 指針+數組+scanf

char str[60], *sp=str;//將數組的首地址str賦給指針變量sp

scanf("%s\n",sp);

printf("%s,%c,%c\n",sp,*sp,*(sp+3));//pointer,p,n

printf("%s,%c,%c\n",str,str[0],str[3]);//pointer,p,n

• 使用scanf對結構體進行賦值；

#include<stdio.h>
struct student
{
    int num;
    char name[10];
};
void main()
{
    struct student s;
    printf(
 
"輸入學號：\n");
    scanf("%d",&s.num);//scanf賦值給結構體的num成員
    printf("輸入姓名：\n");
    scanf("%s",&s.name);
    printf("輸入的信息為：學號：%d,姓名：%s\n",s.num ,s.name);
}

• 輸入數據語句的格式：scanf（“%d”,&x);
• char*:字符指針類型

C語言學習記錄_2019.02.09