Question

运行此代码时遇到错误。将有一个＆＃34;程序停止工作＆＃34;窗口一旦到达循环就扫描用户输入的名称（＆＃34; scanf_s（％s＆＃34;，＆amp; nameptr [i]）;）。任何帮助或建议将不胜感激！

#include <stdio.h>
#include <string.h>
#define SIZE 10
int findTarget(char *target, char nameptr[SIZE][80], int size);

int main()
    {
    char nameptr[SIZE][80];
    char t[40];
    int i, result, size;
    printf("Enter no. of names: ");
    scanf_s("%d", &size);
    printf("Enter %d names: ", size);


    for (i = 0; i < size; i++) 
            scanf_s("%s", &nameptr[i]); 

    printf("Enter target name: ");
    scanf_s("\n");
    gets(t);
    result = findTarget(t, nameptr, size);
    printf("findTarget(): %d\n", result);

    return 0;

    }

    int findTarget(char *target, char nameptr[SIZE][80], int size)
      {
      int i;
      for (i = 0; i<size; i++) {
      if (strcmp(nameptr[i], target) == 0)
        return i;
        }
    return -1;
      }

Answer 1

此：

scanf_s("%s", &nameptr[i]);

应该是

scanf_s("%s", nameptr[i], sizeof(nameptr[i])); 
/* Or better */
scanf_s("%79s", nameptr[i], sizeof(nameptr[i]));

或

scanf_s("%s", nameptr[i], _countof(nameptr[i])); 
/* Or better */
scanf_s("%79s", nameptr[i], _countof(nameptr[i]));

因为%s中的scanf_s需要第三个参数来表示所使用的字符串参数的最大大小。有关这方面的更多信息，请访问msdn documentation of scanf_s

读取用户输入并存储到阵列时出错

1 个答案: