Third

get_info.c

@@ -0,0 +1,36 @@
+#include<stdio.h>
+
+int main(void)
+{
+    struct custom
+    {
+        char name[20];
+        char ID[20];
+        char card_number[20];
+        float sum;
+    }a;
+FILE *fp;
+char c='Y';
+fp=fopen("sum.dat","w");//创建只写文件
+while(c=='Y'||c=='y')//判断循环
+{
+    printf("输入姓名:");
+    scanf("%s",a.name);
+    getchar();
+    printf("输入身份证号:");
+    scanf("%s",a.ID);
+    printf("输入卡号:");
+    scanf("%s",a.card_number);
+    printf("输入余额:");
+    scanf("%f",&a.sum);
+fprintf(fp,"%s%s%s%.2f\n",a.name,a.ID,a.card_number,a.sum);
+    while(1)
+    {
+        printf("继续录入?<Y/N>");
+        c=getche();
+        if(c=='Y'||c=='y'||c=='N'||c=='n')
+            break;
+    }
+}
+fclose(fp);
+}