I want to sort the data inputed 3 different ways, as a choice from the user. Eit

Question

I want to sort the data inputed 3 different ways, as a choice from the user. Either Alphabetical by name, by decending order for the ID or decending grades. How would I manipulate the program to sort the strings? maybe by usingstrcmp()?

#include <stdio.h>

#include <string.h>

struct student {

int student_id;

char name[30];

char grade[15];

};

int i;

struct student stu[20];

int students;

int sort;

int main(void)

{

printf("How many students in the Class?: ");

scanf("%d", &students);

for(i = 0; i < students; i++)

{

printf("Enter name: ");

scanf("%s",stu[i].name);

printf("Enter id: ");

scanf("%d", &stu[i].student_id);

printf("Enter grade: ");

scanf("%s",stu[i].grade);

printf(" ");

}

printf("how do you want to sort the records? [0 - name, 1 - id, 2 - grade]: ");

scanf("%d", &sort);

if (sort==0)

for(i = 0; i < students; i++)

printf(" Name: %s Sudent id: %d Grade: %s ",

stu[i].name,stu[i].student_id,stu[i].grade);

else if (sort==1)

for(i = 0; i < students; i++)

printf(" Student id: %d Name: %s Grade: %s ",

stu[i].student_id,stu[i].name, stu[i].grade);

else if (sort==2)

for(i = 0; i < students; i++)

printf(" Grade: %s Name: %s Student id: %d ",

stu[i].grade,stu[i].name,stu[i].student_id);

return 0;

}

Explanation / Answer

//use this fxn void sort(struct student st[],int cnt,int choice){//(0 - name, 1 - id, 2 - grade) int i,j; struct student temp; /* char last_name[30]; int student_id; // five digits char grade; */ for(i=0;ist[j+1].student_id) ||(choice==2 && st[j].grade>st[j+1].grade)) { temp=st[j]; st[j]=st[j+1]; st[j+1]=temp; } } } return; }

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