c - C 中的错误处理(文件)

Question

我目前正在对计算机科学进行内部评估，但遇到了障碍。我想在数组中搜索用户将输入的代码。我已经实现了如何在数组中搜索字符串，但我无法了解如何提示用户重新输入代码(如果它不在数组中)。有任何想法吗？这是我的进步 如何提示用户输入存储在数组中的代码？也就是说，如果首先输入了错误的代码

for (j = 0; j < num_items; j++)       //Loop num_items times          
{                   //Beginning of for loop
     if (strcmp (array[j].code1, codenew) == 0)       //If code is found
         {               //Beginning of if statement
         price[i] = item_qty[i] * array[j].price1;     //Calculating the ice f an item
         printf ("Price : %d", price[i]);      //Prints price
         printf ("\nEnter '%s' to confirm: ", array[j].itemname1);     /Confirming the item
         scanf ("%s", item_name[i]);   //Reads item name into an array
         while (strcmp (item_name1[i], array[j].itemname1) != 0)       /Looping until both item names are the same
         {           //Begin while loop
         printf ("Incorrect input. Enter '%s' ,Try Again!: ", array[j].itemname1); //Prompt user to try again
         scanf ("%s", item_name[i]);       //Reads item name into an array                         
         }           //End while loop 
         total_price += price[i];      //Calculation of total price

                //Terminates loop
         }               //End of if statement
}                  //End of for loop

Answer 1

只需将上述所有代码包装在 while 循环中，然后在 for 循环之后，如果找不到，则再次从 STDIN 读取输入