#include <stdio.h>
#include <string.h>
typedef struct
{
char name[15];
int grade;
char major[15];
}studentRecord;
int main()
{
int m,i,j;
setvbuf(stdout,NULL,_IONBF,0);
printf("Please input the number of students(<=50):");
start:
scanf("%d",&m);
studentRecord student[m];
if(m<=50)
{
printf("Please input students'information:\n");
for(i=0;i<m;i++)
{
scanf("%s %d %s\n",student[m].name,&student[m].grade,student[m].major);
}
for(i=0;i<m-1;i++)
{
for(j=i+1;j<m;j++)
{
if(strcmp(student[i].name,student[j].name)>0)
{
char temp;
strcpy(temp,student[i].name);
strcpy(student[i].name,student[j].name);
strcpy(temp,student[j].name);
}
}
}
for(i=0;i<m;i++)
{
printf("%s %d %s",student[i].name,student[i].grade,student[i].major);
}
}
else
{
printf("Warning:Please input a number which does not exceed 50.\n");
printf("Input again:");
goto start;
}