C program using all 32 keywords available in ANSCII

Question:WAP in c using all 32 keyword available in ANSCII

solution

#include ⁢stdio.h>
#include ⁢stdlib.h>
const signed sub = 5;
typedef enum number {student1, student2, student3};
union Job {
     unsigned int  Tyear;
     volatile int Lyear;
} T;
extern float grade=3.0;
 struct
{
    char fn[12],ln[8];
    short int sn,cpl,egp,mat,tsm,phy,t;
     float per;
}student[3];
static long int i=0;
int main()
{
   auto int choice;
    for(i=0;i<3;i++)
    {
        printf("Enter student %d first name:",i+1);
        scanf("%s",student[i].fn);
        printf("Enter student %d second name:",i+1);
        scanf("%s",student[i].ln);
        printf("Enter student number:");
        scanf("%d",&student[i].sn);
        printf("Enter CPL101 marks:");
        scanf("%d",&student[i].cpl);
        printf("Enter EGP101 marks:");
        scanf("%d",&student[i].egp);
        printf("Enter MAT102 marks:");
        scanf("%d",&student[i].mat);
        printf("Enter TSM101 marks:");
        scanf("%d",&student[i].tsm);
        printf("Enter PHY101 marks:");
        scanf("%d",&student[i].phy);
        student[i].t = student[i].phy+student[i].tsm+student[i].mat+student[i].egp+student[i].cpl;
        student[i].per=student[i].t/sub;
    }
    retry:
    printf("Press\n 1: to see Highest Percentage\n 2:to see overall grading\n 3:to print result\n" );
    scanf("%d",&choice);
    switch(choice)
    {
        case 1: printf("the Highest percentage is:");
                topper();
                break;
        case 2:printf("Analysis:");
                news();
                break;
        case 3:printf("Printing result:");
                printingresult();
                break;
        default: printf("Wrong Choice\n");
                goto retry;
    }
    return 0;

}
void printingresult()
{
     printf("\nstd.no        name       cpl        phy       mat       egp             tsm           total           per\n");
     i=0;
        do
    {
        printf("%d\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%d\t\t%f\n",student[i].sn,student[i].fn,student[i].ln,student[i].cpl,student[i].phy,student[i].mat,student[i].egp,student[i].tsm,student[i].t,student[i].per);
                i++;
    }while(i&lt3);
}
void topper()
{
    register double max;
    for(i =student1;i&lt=student3;i++)
    {
        if(max>student[i].per)
        {
            continue;
        }
        else
        {
                 max = student[i].per;
        }
    }
    printf("%4f",max);
}
void news()
{
    T.Lyear=2020;
    printf("Result in year: %d",T.Lyear);
    printf("\nGrade last year: %f",grade);
    T.Tyear=2021;
    printf("\nResult this year %d",T.Tyear);
    grade = student[0].per+student[1].per+student[2].per;
    printf("\nOverall Grade:%f",(grade/3));

}

output