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#include<stdio.h>
#include<string.h>
typedef struct Student
{
int roll;
char name[50];
int m[3];
int tot;
float avg;
char grade;
}std;
void insertdata(std [],int);
void dispdata(std [],int);
void topper(std [],int);
void topper_each_sub(std [],int);
void arrang_by_name(std [],int);
int main()
{
std s[50];
int m;
printf("Enter the total number of students :");
scanf("%d",&m);
printf("\nEnter the records for %d students",m);
insertdata(s,m);
printf("\nRecords of %d students : ",m);
dispdata(s,m);
printf("\nTopper in the department : ");
topper(s,m);
printf("\nTopper in each subjects : ");
topper_each_sub(s,m);
printf("\nStudent's record in ascending order of name : ");
arrang_by_name(s,m);
dispdata(s,m);
return 0;
}
void insertdata(std p[],int k)
{
int i,j;
for(i=0;i<k;i++)
{
printf("\nInsert records for student %d : ",i+1);
printf("\nEnter the roll number : ");
scanf("%d",&p[i].roll);
getchar();
printf("\nEnter the name : ");
gets(p[i].name);
printf("\nEnter marks for 3 subjects : ");
p[i].tot=0;
for(j=0;j<3;j++)
{
scanf("%d",&p[i].m[j]);
p[i].tot+=p[i].m[j];
}
p[i].avg=p[i].tot/3.0;
if(p[i].avg>=90)
p[i].grade='O';
else if(p[i].avg>=80 && p[i].avg<90)
p[i].grade='E';
else if(p[i].avg>=70 && p[i].avg<80)
p[i].grade='A';
else if(p[i].avg>=60 && p[i].avg<70)
p[i].grade='B';
else if(p[i].avg>=50 && p[i].avg<60)
p[i].grade='C';
else if(p[i].avg>=40 && p[i].avg<50)
p[i].grade='D';
else
p[i].grade='F';
}
}
void dispdata(std p[],int k)
{
int i,j;
printf("\nRoll\tName\t\tMarks1\tMarks2\tMarks3\tTotal\tAvg\tGrade");
printf("\n============================================================================");
for(i=0;i<k;i++)
{
printf("\n%d\t",p[i].roll);
printf("%s\t\t",p[i].name);
for(j=0;j<3;j++)
printf("%d\t",p[i].m[j]);
printf("%d\t%3.2f\t%c",p[i].tot,p[i].avg,p[i].grade);
}
}
void topper(std s[],int m)
{
int i,j,t,max;
max=0;
t=0;
for(i=0;i<m;i++)
{
if(s[i].tot>max)
{
max=s[i].tot;
t=i;
}
}
printf("\nRoll\tName\t\tMarks1\tMarks2\tMarks3\tTotal\tAvg\tGrade");
printf("\n============================================================================");
printf("\n%d\t",s[t].roll);
printf("%s\t\t",s[t].name);
//puts(p[i].name);
for(j=0;j<3;j++)
printf("%d\t",s[t].m[j]);
printf("%d\t%3.2f\t%c",s[t].tot,s[t].avg,s[t].grade);
}
void topper_each_sub(std s[],int k)
{
int i,j,t,max;
for(i=0;i<3;i++)
{
max=0;
t=0;
for(j=0;j<k;j++)
{
if(s[j].m[i]>max)
{
max=s[j].m[i];
t=j;
}
}
printf("\n Maximum marks obtained in Subject %d by :",i+1);
printf("\nRoll\tName\t\tMarks1\tMarks2\tMarks3\tTotal\tAvg\tGrade");
printf("\n============================================================================");
printf("\n%d\t",s[t].roll);
printf("%s\t\t",s[t].name);
//puts(p[i].name);
for(j=0;j<3;j++)
printf("%d\t",s[t].m[j]);
printf("%d\t%3.2f\t%c",s[t].tot,s[t].avg,s[t].grade);
}
}
void arrang_by_name(std s[],int p)
{
std t;
int i,j;
for(i=0;i<p;i++)
{
for(j=0;j<p-i-1;j++)
{
if(strcmp(s[j].name,s[j+1].name)>0)
{
t=s[j];
s[j]=s[j+1];
s[j+1]=t;
}
}
}
}
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