Question

Lab 8 CS102 Lab 8 Hands on programming with Pointers The goal of this lab exercise is to apply the knowledge of pointers and File input output operations. Program 1 Short description: Declare, initialize and use pointers for different data types. Detailed Description: Declare 4 variables of type's int, float, double and char respectively and initialize them to some logically correct values. Declare pointers to all these variables. Initialize the pointers to point to these variables respectively Print the values present in the variables using pointers only. Print the addresses of the variables using address operators ("&) and also print the contents of corresponding pointer variables (the addresses to which they point to) and verify if they are the same. Note: they are.not the same, you.are doing something wrong Checkwhat is weons #include <stdio.h> int main() //declare int variable and initialize it to some value l/declare float variable and initialize it to some value //declare double variable and initialize it to some value /declare char variable and initialize it to some value /declare a pointer variable to int and initialize it to point to int declare a pointer variable to float and initialize it to point to float lldeclare a pointer variable to double and initialize it to point to double l/declare a pointer variable to char and initialize it to point to char l/print the value of all the four variables using pointers (using " operator) refer the slides and example code on how to do this) dereferencing //print the addresses of memory locations of all 4 variables using the "&" operator Irefer the slides and example code on how to do this) l/print the content of the pointers using the pointer name /refer the slides and example code on how to do this) the pointur rnam a ddrut o the poin fers usn //Print the

Answer 1

Answer:

C Program Code :

#include<stdio.h>

int main()
{
int a=5; //declare int variable and initialize it to some value
float b=7.2983; //declare float variable and initialize it to some value
double d=987321.53976; //declare double variable and initialize it to some value
char ch='Q'; //declare char variable and initialize it to some value

int *ptrToInt=&a; //declare a pointer variable to int and initialize it to point to int
float *ptrToFloat=&b; //declare a pointer variable to float and initialize it to pioint to ffloat
double *ptrToDouble=&d; //declare a pointer variable to double and initialize it to point to doouble
char *ptrToChar=&ch; //declare a pointer variable to char and initialize it to point to char

//print the value of all the four variables using pointers using dereferencing operator "*"
printf(" a = %d\n",*ptrToInt);
printf(" b = %f\n", *ptrToFloat);
printf(" d = %lf\n", *ptrToDouble);
printf(" ch = %c\n\n", *ptrToChar);

//print the addresses of memory locations of all 4 variales using the "&" operator
printf(" Address of a = %p\n",&a);
printf(" Address of b = %p\n", &b);
printf(" Address of d = %p\n", &d);
printf(" Address of ch = %p\n\n", &ch);

//print the content of the pointers using the pointer name
printf(" Content of ptrToInt = %p\n", ptrToInt);
printf(" Content of ptrToFloat = %p\n", ptrToFloat);
printf(" Content of ptrToDouble = %p\n", ptrToDouble);
printf(" Content of ptrToChar = %p\n\n", ptrToChar);

//print the address of the pointers using the pointer name
printf(" address of ptrToInt = %p\n", &ptrToInt);
printf(" address of ptrToFloat = %p\n", &ptrToFloat);
printf(" address of ptrToDouble = %p\n", &ptrToDouble);
printf(" address of ptrToChar = %p\n\n", &ptrToChar);

return 0;

}

Output :