#include <stdio.h>

int main() { int n, i; printf("Enter number of elements: "); scanf("%d", &n);

int arr[n];
int *ptr = arr;

printf("Enter %d elements:\n", n);
for (i = 0; i < n; i++)
    scanf("%d", (ptr + i));

int max = *ptr;
for (i = 1; i < n; i++) {
    if (*(ptr + i) > max)
        max = *(ptr + i);
}

printf("Maximum element = %d\n", max);
return 0;

}

#include <stdio.h>

void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

int main() { int x, y; printf("Enter two numbers: "); scanf("%d %d", &x, &y);

swap(&x, &y);

printf("After swapping: x = %d, y = %d\n", x, y);
return 0;

}

#include <stdio.h>

struct Student { char name[50]; int roll; float marks[3]; float total, average; };

int main() { struct Student s[5]; int i, j;

for (i = 0; i < 5; i++) {
    printf("\nEnter details for student %d:\n", i + 1);
    printf("Name: ");
    scanf("%s", s[i].name);
    printf("Roll number: ");
    scanf("%d", &s[i].roll);
    s[i].total = 0;
    for (j = 0; j < 3; j++) {
        printf("Marks in subject %d: ", j + 1);
        scanf("%f", &s[i].marks[j]);
        s[i].total += s[i].marks[j];
    }
    s[i].average = s[i].total / 3.0;
}

printf("\nStudent Results:\n");
printf("Name\tRoll\tTotal\tAverage\n");
for (i = 0; i < 5; i++)
    printf("%s\t%d\t%.2f\t%.2f\n", s[i].name, s[i].roll, s[i].total, s[i].average);

return 0;

}

#include <stdio.h>

struct Address { char street[50]; char city[50]; int zip; };

struct Student { char name[50]; int roll; struct Address addr; };

int main() { struct Student s;

printf("Enter student name: ");
scanf("%s", s.name);
printf("Enter roll number: ");
scanf("%d", &s.roll);

printf("Enter street: ");
scanf("%s", s.addr.street);
printf("Enter city: ");
scanf("%s", s.addr.city);
printf("Enter zip code: ");
scanf("%d", &s.addr.zip);

printf("\n--- Student Details ---\n");
printf("Name: %s\nRoll No: %d\nAddress: %s, %s - %d\n", s.name, s.roll, s.addr.street, s.addr.city, s.addr.zip);

return 0;

}

#include <stdio.h>

struct Product { int id; char name[50]; float price; };

int main() { int n, i; printf("Enter number of products: "); scanf("%d", &n);

struct Product p[n];
struct Product *ptr = p;

for (i = 0; i < n; i++) {
    printf("\nEnter details for product %d:\n", i + 1);
    printf("Product ID: ");
    scanf("%d", &(ptr + i)->id);
    printf("Product Name: ");
    scanf("%s", (ptr + i)->name);
    printf("Price: ");
    scanf("%f", &(ptr + i)->price);
}

printf("\n--- Product Details ---\n");
printf("ID\tName\tPrice\n");
for (i = 0; i < n; i++)
    printf("%d\t%s\t%.2f\n", (ptr + i)->id, (ptr + i)->name, (ptr + i)->price);

return 0;

}

#include <stdio.h> #include <string.h>

struct Player { char name[50]; char team[50]; float average; };

int main() { int n, i, j; printf("Enter number of players: "); scanf("%d", &n);

struct Player p[n], temp;

for (i = 0; i < n; i++) {
    printf("\nEnter details for player %d:\n", i + 1);
    printf("Player Name: ");
    scanf("%s", p[i].name);
    printf("Team Name: ");
    scanf("%s", p[i].team);
    printf("Batting Average: ");
    scanf("%f", &p[i].average);
}

// Sorting by batting average (descending)
for (i = 0; i < n - 1; i++) {
    for (j = i + 1; j < n; j++) {
        if (p[i].average < p[j].average) {
            temp = p[i];
            p[i] = p[j];
            p[j] = temp;
        }
    }
}

printf("\n--- Player List (Sorted by Batting Average) ---\n");
printf("Name\tTeam\tAverage\n");
for (i = 0; i < n; i++)
    printf("%s\t%s\t%.2f\n", p[i].name, p[i].team, p[i].average);

return 0;

}