Subject:Programming in C - Lab Programmes

MANNAR THIRUMALAI NAICKER COLLEGE
(AUTONOMOUS)
PASUMALAI, MADURAI – 625004.
DEPARTMENT OF COMPUTER SCIENCE (ARTIFICIAL
INTELLIGENCE)
PROGRAMMING in C LAB(23UAICP11)
PRACTICAL EXAMINATION
NOVEMBER 2024

MANNAR THIRUMALAI NAICKER COLLEGE (AUTONOMOUS)
MADURAI
DEPARTMENT OF COMPUTER SCIENCE (ARTIFICIAL
INTELLIGENCE)
BONAFIDE CERTIFICATE
NAME : REG_NO :
CLASS : I B. Sc (CS) AI SEMESTER : I
SUBJECT : Programming in C Lab SUB.CODE : 23UAICP11
This is to certify that this record is a bonafide work done by the above-
mentioned student. The certificate is awarded for the same.
HEAD OF THE DEPARTMENT STAFF IN-CHARGE
Submitted for Practical Examination held on _____________ at
Mannar Thirumalai Naicker College, Pasumalai, Madurai.
INTERNAL EXAMINER EXTERNAL EXAMINER

PROGRAMMING IN C LAB
CONTENTS
S.No. Date Title
Page
No.
Signature
1. ADDITION OF TWO INTEGERS
2. MULTIPLY TWO FLOATING NUMBERS
3. WRITE A CHARACTER AND STRING
4. SWAPPING NUMBERS
5. EVEN OR ODD
6. CHECK VOWEL OR CONSONANT
7. SIMPLE INTEREST CALCULATION
8. LARGEST AMONG THREE NUMBERS
9. SUM OF N NATURAL NUMBERS
10. FACTORIAL OF A NUMBER
11.
DISPLAY PRIME NUMBERS BETWEEN
TWO INTERVALS
12. SIMPLE CALCULATOR
13
SWAPPING TWO NUMBERS USING
FUNCTION
14
FACTORIAL OF N NUMBER USING
RECURSION
15
STRUCTURES FOR EMPLOYEE
INFORMATION
16 POINTERS
17 FILE OPERATIONS

1
EX. NO :1. ADDITION OF TWO INTEGERS
Aim:
To write a c program to add two integers.
Program:
#include <stdio.h>
#include<conio.h>
void main() {
int number1,number2,sum;
printf(“Enter two integers:”);
scanf("%d %d", &number1, &number2);
sum = number1 + number2;
printf("%d + %d = %d", number1, number2, sum);
getch();
}
Output:
Enter two integers: 5
7
5 + 7 = 12
Result: Thus the program has been successfully created.

2
EX.NO:2.MULTIPLY TWO FLOATING NUMBERS
Aim:
To write c program to multiply two floating numbers.
Program:
#include <stdio.h>
#include<conio.h>
void main() {
double a, b, product;
printf("Enter two numbers: ");
scanf("%lf %lf", &a, &b);
Product=a*b;
Printf(“Product=%2lf”,Product);
getch();
Output:
Enter two numbers :2.4
1.24
Product = 2.98

3
EX.NO:3.WRITE A CHARACTER AND STRING IN C
Aim:
To write a c program to read a single character, string and sentence as input.
1. Single character:
Program:
#include <stdio.h>
#include<conio.h>
void main(){
char ch;
printf(“Enter the name:”);
scanf(“%c”,&ch);
printf(“Output:%c”,ch);
getch();
}
Output:
Enter the name: Artificial Intelligence
Output:A
2. Reading a word in c
Program:
#include<stdio.h>
#include<conio.h>
void main(){
char word[100];
printf(“Enter the word:”);
scanf(“%s”,word);

4
printf(“output:%s”,word);
getch();
}
Output:
Enter the name: Artificial Intelligence
Output: Artificial Intelligence

5
EX.NO: 4. SWAPPING NUMBERS
Aim:
To write a c program to swap two numbers.
Program:
#include<stdio.h>
#include<conio.h>
void main() {
double first, second, temp;
printf("Enter first number: ");
scanf("%lf", &first);
printf("Enter second number: ");
scanf("%lf", &second);
temp = first;
first = second;
second = temp;
printf("nAfter swapping, first number = %.2lfn", first);
printf("After swapping, second number = %.2lf", second);
getch();
}
Output:
Enter first number: 1.20
Enter second number: 3.3
After swapping, first number = 3.30
After swapping, second number = 1.20

6
EX.NO: 5. EVEN OR ODD
Aim:
To write a program in c to check whether the number is even or odd.
Program:
#include <stdio.h>
#include <conio.h>
void main() {
int num;
printf("Enter an integer: ");
scanf("%d", &num);
if(num % 2 == 0)
printf("%d is even.", num);
else
printf("%d is odd.", num);
getch();
}
Output:
Enter an integer:28
28 is even.
Enter an integer:35
35 is odd.

7
EX.NO:6.TO CHECK VOWEL OR CONSONANT
Aim:
To write a program in c to check the letter as vowel or consonant.
Program:
#include <stdio.h>
#include<conio.h>
void main() {
char c;
int lowercase_vowel, uppercase_vowel;
printf("Enter an alphabet: ");
scanf("%c", &c);
lowercase_vowel = (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u');
uppercase_vowel = (c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U')
if (lowercase_vowel || uppercase_vowel)
printf("%c is a vowel.", c);
else
printf("%c is a consonant.", c);
getch();
}
Output:
Enter an alphabet: y
y is a consonant.
Enter an alphabet: e
e is a vowel.

8
EX.NO:7. SIMPLE INTEREST CALCULATION
Aim:
To calculate the simple interest using C program.
Program:
#include<stdio.h>
#include<conio.h>
void main()
{
int P,R,T;
double SI;
printf("Enter the principle:");
scanf("%d",&P);
printf("Enter the rate:");
scanf("%d",&R);
printf("Enter the time:");
scanf("%d",&T);
SI=(P*R*T)/100;
printf("The simple interest is %d",SI);
getch();
}
Output:
Enter the Principal: 1300
Enter the Rate: 12
Enter the Time: 2
The Simple Interest is:3120.0

9
EX.NO:8. LARGEST AMONG THREE NUMBERS
Aim:
To write c program to find the maximum number out of the three.
Program:
#include<stdio.h>
#include<conio.h>
void main()
{
int A,B,C;
printf("Enter the numbers A,B,and C:");
scanf("%d%d%d",&A,&B,&C);
if(A>=B&&A>=C)
printf("%d is the largest number:",A);
else if(B>=A&&B>=C)
printf("%d is the largest number:",B);
else
printf("%d is the largest number:",C);
getch();
}
Output:

10
EX .NO:9. SUM OF n NATURAL NUMBERS
Aim:
To write a c program for sum of n natural numbers .
Program:
#include<stdio.h>
#include<conio.h>
void main()
{
Printf(“SUM OF N NATURAL NUMBERSn”);
Printf(“===========================n”);
int i,s-=0;
int n=10;
for (i=0;i<=n;i++)
{
s+=i;
}
printf("Sum= %d ",s);
getch();
}
OUTPUT:

11
EX NO:10 FACTORIAL OF A NUMBER
Aim:
To write a factorial number
Program:
#include <stdio.h>
#include <conio.h>
void main(){
int n,i;
unsigned long long fact=1;
clrscr();
printf("FACTORIAL");
printf("n---------n");
printf("Enter an integer :");
scanf("%d",&n);
if(n<0)
printf("Error!,Factorial of negative number does'nt exist");
else
for(i=1;i<=n;++i)
{
fact*=i;
}
printf("Factorial of %d=%llu",n,fact);
getch();
}

12
Output:

13
EX NO:11 DISPLAY PRIME NUMBERS BETWEEN TWO INTERVALS
Aim:
To display the prime numbers between two intervals
Program:
#include<stdio.h>
#include <conio.h>
void main()
{
clrscr();
int low ,high,i,flag;
printf("Enter two intervals :");
scanf("%d%d",&low,&high);
printf("Prime number between %d and %d are:",low,high);
while(low<high){
flag=0;
if(low<=1){
++low;
continue;
}
for(i=2;i<=low/2;++i)
{
if(low % i==0){
flag=1;
break;
}
}

14
if(flag==0)
printf("%d ",low);
++low;
}
getch();
}
Output:
Result:
Thus the program has been successfully created.

15
EX NO:12 SIMPLE CALCULATOR USING SWITCH STATEMENT
Aim:
To calculate the program using switch statement
Program:
#include<stdio.h>
#include<conio.h>
void main(){
clrscr();
char op;
double first,second;
printf("SIMPLE CALCULATOR");
printf("n------ ----------n");
printf("Enter an operator (+,-,*,/):");
scanf("%c",&op);
printf("Enter two operands:");
scanf("%lf%lf",&first,&second);
switch (op){
case'+':
printf("%1lf+%1lf=%1lf",first,second,first+second);
break;
case'-':
printf("%1lf-%1lf=%1lf",first,second,first-second);
break;
case'*':
printf("%1lf*%1lf=%1lf",first,second,first*second);
break;

16
case'/':
printf("%1lf/%1lf=%1lf",first,second,first/second);
break;
default:
printf("Error!Operator is not correct");
}
getch();
}
Output:

17
EX.NO: 13. SWAPPING TWO NUMBERS USING FUNCTION
Aim:
To write a c program to swap two numbers using function.
Program:
#include<stdio.h>
#include<conio.h>
void swap(int,int);
int main()
{
int a,b;
printf("Enter values for a and bn");
scanf("%d%d",&a,&b);
printf("nnBefore swapping: a = %d and b = %dn",a,b);
swap(a,b);
return 0;
}
void swap (int x,int y)
{
int temp;
temp=x;
x=y;
y=temp;
printf("nAfter swapping:a=%d and b=%dn",x,y);
}
Output:

18
EX NO:14 FACTORIAL OF N NUMBER USING RECURSION
Aim:
To write a c program for factorial of n numbers using function
Program:
#include<stdio.h>
long factorial(int n)
{
if (n == 0)
return 1;
else
return(n * factorial(n-1));
}
void main()
{
int number;
long fact;
printf("Enter a number: ");
scanf("%d", &number);
fact = factorial(number);
printf("Factorial of %d is %ldn", number, fact);
return 0;
}
Output:
Enter a number: 6
Factorial of 5 is: 720

19
EX NO:15 STRUCTURES FOR EMPLOYEE DETAIL
AIM:
To write a c program to print employee information using structure
Program:
#include <stdio.h>
/*structure declaration*/
struct employee{
char name[30];
int empId;
float salary;
};
int main()
{
/*declare structure variable*/
struct employee emp;
/*read employee details*/
printf("nEnter details :n");
printf("Name :"); gets(emp.name);
printf("ID :"); scanf("%d",&emp.empId);
printf("Salary :"); scanf("%f",&emp.salary);
/*print employee details*/
printf("nEntered detail is:");
printf("Name: %s" ,emp.name);
printf("Id: %d" ,emp.empId);
printf("Salary: %fn",emp.salary);
return 0;
}

20
OUTPUT:

21
EX NO:16 PROGRAM FOR POINTERS
Aim:
To write a c program for pointers
Program:
#include <stdio.h>
void geeks()
{
int var = 10;
ble
int* ptr;
ptr = &var;
printf("Value at ptr = %p n", ptr);
printf("Value at var = %d n", var);
printf("Value at *ptr = %d n", *ptr);
}
// Driver program
int main()
{
geeks();
return 0;
}
Output:

22
EX NO:17 PROGRAM FOR FILE CREATION
Aim:
To Write a program to create a file called emp.rec and store information about a person, in
terms of his name, age and salary.
Program:
#include<stdio.h>
#include <conio.h>
#include<stdlib.h>
void main()
{
FILE *fptr;
char name[20];
int age;
float salary;
fptr = fopen("emp.rec", "w");
if (fptr == NULL)
{
printf("File does not exists n");
return;
}
printf("Enter the name n");
scanf("%s", name);
fprintf(fptr, "Name = %sn", name);
printf("Enter the agen");
scanf("%d", &age);
fprintf(fptr, "Age = %dn", age);
printf("Enter the salaryn");
scanf("%f", &salary);
fprintf(fptr, "Salary = %.2fn", salary);

23
fclose(fptr);
}
Output:

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