char name[20];
                printf("请输入您要查询的姓名\n");
                scanf("%s",&name);
                for(i=0;i<400;i++)
                {
                    
                    if(strcmp(students[i].name,name)==0)//对比查找
                    {
                        printf("学生信息为：\n");
                        printf("学号：    %s\n",students[i].number);
                        printf("姓名:     %s\n",students[i].name);
                        printf("性别：    %s\n",students[i].gender);
                        printf("年龄：    %d\n",students[i].age);
                        printf("专业班级：%s\n",students[i].major);
                     }
                     else if(i==399 && strcmp(students[i].name,name)==0)
                     {
                          printf("查无此人");
                          break;
                     }
                     else
                     {
                         continue;
                     }        
此段程序可以顺利进入 比较环节但是如果换成这段
                char number[20];
                printf("请输入您要查询的学号\n");
                scanf("%s",&number);
                for(i=0;i<400;i++)
                {
                    if(strcmp(students[i].number,number)==0)
                    {
                        printf("学生信息为：\n");
                        printf("学号：    %s\n",students[i].number);
                        printf("姓名:     %s\n",students[i].name);
                        printf("性别：    %s\n",students[i].gender);
                        printf("年龄：    %d\n",students[i].age);
                        printf("专业班级：%s\n",students[i].major);
                    }
                    else if(i==399 && strcmp(students[i].number,number)==0)
                     {
                          printf("查无此人");
                          break;
                     }
                     else
                     {
                         continue;
                     }                    
便无法进行比较，请问是哪里出了问题，我又应当如何修改
谢谢

"无法进行比较"是什么意思？

[此贴子已经被作者于2019-11-23 05:37编辑过]

就像这个 姓名就可以查询但是学号却不可以

之前读取文件数据时没有考虑换行符，上一行的换行符被加到下一行number头部。
fscanf(fin,"%[^,],%[^,],%[^,],%d,%s",students[i].number, students[i].name, students[i].gender, &students[i].age, students[i].major)

改为：
fscanf(fin,"%[^,],%[^,],%[^,],%d,%s\n",students[i].number, students[i].name, students[i].gender, &students[i].age, students[i].major)

[此贴子已经被作者于2019-11-23 12:10编辑过]

谢谢，学会了，