您遇到的问题是您已将三个变量(fname、lname 和grade)声明为 char[](数组)(嗯,这就是您要使用的类型),但您想提示并保留一堆的学生信息。然后您尝试从 strtok() 复制到您想要成为 char[] 的内容,但是由于您取消引用 fname[i] (lname[i],grade[i]),它们是 char 类型,而不是 char []。
您将需要 stdlib.h 退出,
#include <stdio.h>
#include <stdlib.h> //for exit
#include <string.h>
//#include <math.h> //you don't need this, yet
#define STUDLIMIT (100)
您可以创建一个 fname[]、lname[]、grade[] 数组(参见此处:http ://www.cs.swarthmore.edu/~newhall/unixhelp/C_arrays.html ),
int main(void)
{
//int menuswitch=1; //you aren't using this
int amountofstudents;
char studentinfo[100];
char fname[STUDLIMIT][50];
char lname[STUDLIMIT][50];
char grade[STUDLIMIT][50];
int ndx;
printf("Enter Amount of Students: ");
if( (fscanf(stdin,"%d ", &amountofstudents)<=0)
|| (amountofstudents<1) || (amountofstudents>STUDLIMIT) )
{
printf("need %d to %d studends\n",1,STUDLIMIT); exit(0);
}
for (ndx=0;ndx<amountofstudents;ndx++)
{
printf("Student: "); fflush(stdout);
fgets(studentinfo,sizeof(studentinfo),stdin);
strcpy(fname[ndx], strtok(studentinfo, " "));
strcpy(lname[ndx], strtok(NULL, " "));
strcpy(grade[ndx], strtok(NULL, " "));
}
}
或者您可以创建一个 struct(ure) 来保存输入的学生信息,并实例化这些学生记录的数组,为您输入和存储的每个学生创建一个数组,
typedef struct student
{
char fname[50];
char lname[50];
char grade[50];
} StudentObj;
int StudentCopy(StudentObj*sp,char*fname,char*lname,char*grade)
{
if(!sp || !fname || !lname || !grade ) return -1;
strcpy(sp->fname, fname);
strcpy(sp->fname, lname);
strcpy(sp->fname, grade);
}
StudentObj students[STUDLIMIT];
int main(void)
{
//int menuswitch=1; //you aren't using this
int amountofstudents;
char studentinfo[100];
char fname[50];
char lname[50];
char grade[50];
int ndx;
printf("Enter Amount of Students: ");
if( (fscanf(stdin,"%d ",&amountofstudents)<=0)
|| (amountofstudents<1) || (amountofstudents>STUDLIMIT) )
{
printf("need %d to %d studends\n",1,STUDLIMIT); exit(0);
}
for (ndx=0;ndx<amountofstudents;ndx++)
{
printf("Student: "); fflush(stdout);
fgets(studentinfo,sizeof(studentinfo),stdin);
strcpy(fname, strtok(studentinfo, " "));
strcpy(lname, strtok(NULL, " "));
strcpy(grade, strtok(NULL, " \n\r"));
StudentCopy(&(students[ndx]),fname,lname,grade);
}
}