Mula Education Society’s
Shri Dnyaneshwar Mahavidyalaya Newasa
Department Of BSC (CS)
Practical No 1: Date:- / /
Name of Student :-
Seat No.:- Remark :-
Q1)
A)Write a c program to interchange two no using pointer.
Solution:-
#include<stdio.h>
int main()
{
int x, y, *a,*b, temp;
printf("Enter the value of x and y\n");
scanf("%d%d", &x, &y);
printf("Before swapping x=%d y=%d",x,y);
a=&x;
b=&y;
temp=*b;
*b=*a;
*a=temp;
printf("After swapping x=%d y=%d",x,y);
return 0;
}
OUTPUT:-
B) Derefrencing operation using pointer.
Solution:-
#include<stdio.h>
int main()
{
int x=10;
int *ptr;
ptr=&x;
printf("Value of x: %d\n", *ptr);
return 0;
}
OUTPUT:-
Mula Education Society’s
Shri Dnyaneshwar Mahavidyalaya Newasa
Department Of BSC (CS)
Practical No 2: Date:- / /
Name of Student :-
Seat No.:- Remark :-
Q.1)
A)Program to Compair two string using pointer without library
function.
Solution:-
#include<stdio.h>
int compare_string(char*,char*);
int main(){
char first[1000], second[1000];
int result;
printf("Input a string\n");
gets(first);
printf("Input a string\n");
gets(second);
result = compare_string(first, second);
if(result == 0)
printf("The strings are same.\n");
else
printf("The string are different.\n");
return 0;
}
int compare_string(char *first, char *second)
{
while (*first == *second)
{
if (*first == '\0' || *second == '\0')
break;
first++;
second++;
}
if(*first == '\0' && *second == '\0')
return 0;
else
return -1;
}
OUTPUT:-
B)Write a c program to find maximum of two number using macro.
Solution:-
#include<stdio.h>
#define MAXI(x,y) ((x>y)? x:y)
int main(){
int a, b, max;
printf("Enter first number:");
scanf("%d", &a);
printf("Enter second number:");
scanf("%d", &b);
max=MAXI(a,b);
printf("Maximum number is :%d\n", max);
return 0;
}
OUTPUT:-
Mula Education Society’s
Shri Dnyaneshwar Mahavidyalaya Newasa
Department Of BSC (CS)
Practical No 3: Date:- / /
Name of Student :-
Seat No.:- Remark :-
Q.1)
A)Program show dynamic allocation of memory function.
Solution:-
#include<stdio.h>
#include<stdlib.h>
int main(){
int *ptr;
int n, i, sum=0;
n=5;
printf("Enter number of element:%d\n",n);
ptr=(int*)calloc(n,sizeof(int));
if (ptr == NULL)
{
printf("Memory not allowed.\n");
exit(0);
}
else
{
printf("memory successfulls allocated using calloc:\n");
for (i=0;i<n;++i)
{
ptr[i]=i+1;
}
printf("The elements of the array are:");
for(i=0;i<n;i++)
{
printf("%d",ptr[i]);
}
}
return 0;
}
OUTPUT:-
Mula Education Society’s
Shri Dnyaneshwar Mahavidyalaya Newasa
Department Of BSC (CS)
Practical No 4: Date:- / /
Name of Student :-
Seat No.:- Remark :-
Q.1)
A) Program using pointer to check given string is palindrome or
not.
Solution:-
#include<stdio.h>
void is Palindrome(char* string)
{
char *ptr, *rev;
ptr = string;
while(*ptr != '\0')
{
++ptr;
}
--ptr;
for (rev = string; ptr>=rev;)
{
if (*ptr == *rev)
{
--ptr;
rev++;
}
else
break;
}
if (rev>ptr)
printf("string is Palindrome");
else
printf("string is not Palindrome");
}
int main()
{
char str[1000];
printf("Enter any string:");
gets(str);
isPalindrome(str);
return 0;
}
OUTPUT:-
B)Write a c program calculate length of string strlen () function.
Solution:-
#include<stdio.h>
#include<string.h>
int main()
{
char a[20]="Program";
printf("length of string a=%d", strlen(a));
return 0;
}
OUTPUT:-
Mula Education Society’s
Shri Dnyaneshwar Mahavidyalaya Newasa
Department Of BSC (CS)
Practical No 5: Date:- / /
Name of Student :-
Seat No.:- Remark :-
Q.1)
A)Write a c program to create student structure having fields roll no
, name accept details of 1 student & write a function to display the
details.
Solution:-
#include<stdio.h>
struct student{
int roll_no;
char name[50];
};
void displayStudent(struct student s)
{
printf("Roll No:%d\n",s.roll_no);
printf("Name:%s\n",s.name);
}
int main()
{
struct student s;
printf("Enter Roll No:");
scanf("%d",&s.roll_no);
printf("Enter Name:");
scanf("%s",&s.name);
printf("\nDetails of the student:\n");
displayStudent(s);
return 0;
}
OUTPUT:-
B)Write a c program to calculate electricity bill using function.
Solution:-
#include<stdio.h>
float calculate_bill(float units){
float bill=0;
if(units<=100){
bill = units*0.50;
}else if (units<=200){
bill=100*0.50+(units-100)*0.75;
}else if (units <=300){
bill=100*0.50+100*0.75+(units-200)*1.20;
}else{
bill=100*0.50+100*0.75+100*1.20+(units-300)*1.50;
}
return bill;
}
int main(){
int units;
float bill;
printf("Enter the number of units consumed:");
scanf("%d",&units);
bill = calculate_bill(units);
printf("Total electricity bill:%.2f\n",bill);
return 0;
}
OUTPUT:-
