Question

C programming

Consider the following struct definition:

struct player {
    char letter;
    int age;
}
typedef struct player player_t;

Write a program to do the following:

• Declare a pointer to a player_t variable
• Allocate memory using malloc
• Initialise each field of the struct
• Print the struct inside the main
• Pass the struct to a function which increments the age by one using a pointer to the struct
• Print the struct inside the main after the function was called
• Free the memory allocated to structs, and exit the program

Answer 1

#include<stdio.h>
#include<stdlib.h>
struct player {
char letter;
int age;
};
typedef struct player player_t;

void fun(player_t *p)
{
p->age = p->age+1;//incrementing age by1
}
int main()
{
player_t *p;//declaring pointer
p = (player_t *)malloc(sizeof(player_t));//allocating memory
//initializing
p->letter='M';
p->age=23;
//printing
printf("%c %d\n",p->letter,p->age);
//passing to function
fun(p);
//printing
printf("%c %d\n",p->letter,p->age);
//freeing memory
free(p);

return 0;
}

output:

M 23
M 24


Process exited normally.
Press any key to continue . . .

//PLS give a thumbs up if you find this helpful, it helps me alot, thanks.


//if you have any doubts, ask me in the comments