#include<stdio.h>
int main() {
puts("~~~~~~~~~~~~~~~");
puts(" Payal Kash");
puts("~~~~~~~~~~~~~~~");
return 0;
} Output:
#include<stdio.h>
int main() {
printf("\n\t\t\tGuru Nanak Dev Engineering College,");
printf("\n\t\t\tGill Road,");
printf("\n\t\t\tLudhiana , Punjab");
return 0;
}Output:
#include <stdio.h>
int main() {
int x,y,sum;
printf("Enter two numbers: \n");
scanf("%d %d",&x,&y);
sum=x+y;
printf("\n Sum of the two numbers: %d ",sum);
return 0;
}Output:
#include <stdio.h>
int main() {
int a,b,r,q;
printf("\nEnter the dividend:");
scanf("%d",&a);
printf("\nEnter the divisor:");
scanf("%d",&b);
r=a%b;
q=a/b;
printf("\nRemainder: %d",r);
printf("\nQuotient: %d",q);
return 0;
}Output:
#include <stdio.h>
int main() {
int a,b;
printf("\nEnter the value of A: ");
scanf("%d",&a);
printf("\nEnter the value of B: ");
scanf("%d",&b);
a = a + b;
b = a - b;
a = a - b;
printf("After swapping: \n");
printf("A: %d and B: %d\n",a,b);
return 0;
}Output:
#include<stdio.h>
void main(){
int x;
printf("Enter a number:");
scanf("%d",&x);
if(x%2==0)
printf("The number is even.\n");
else
printf("The number is odd.\n");
} Output:
#include<stdio.h>
int main() {
int a,b;
printf("Enter any two numbers:\n");
scanf("%d%d", &a, &b);
if(a>b)
printf("%d is greater.\n",a);
else
printf("%d is greater.\n",b);
return 0;
}Output:
#include<stdio.h>
void main(){
int a,b,c;
printf("Enter three numbers:\n");
scanf("%d %d %d",&a,&b,&c);
if(a>b && a>c)
{
printf("%d is the greatest number\n",a);
}
else if(b>a && b>c)
{
printf("%d is the greatest number\n",b);
}
else{
printf("%d is the greatest number\n",c);}
}
Output:
#include<stdio.h>
void main()
{
int marks;
printf("Enter marks:");
scanf("%d",&marks);
if(marks<=100 && marks>90){
printf("Your grade is: A1\n");
}
else if(marks<=90 && marks>80)
{
printf("Your grade is A2\n");
}
else if(marks<=80 && marks>70)
{
printf("Your grade is B1\n");
}
else if(marks<=70 && marks>60)
{
printf("Your grade is B2\n");
}
else
{
printf("FAIL\n");
}
}
Output:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main() {
float a, b, c, root1, root2;
float realp, imagp, disc;
printf("Enter the values of a, b and c \n");
scanf("%f %f %f", &a, &b, &c);
if (a == 0 || b == 0 || c == 0)
{
printf("Error: Roots cannot be determined \n");
exit(1);
}
else
{
disc = b * b - 4.0 * a * c;
if (disc < 0)
{
printf("Imaginary Roots\n");
realp = -b / (2.0 * a) ;
imagp = sqrt(abs(disc)) / (2.0 * a);
printf("Root1 = %f +i %f\n", realp, imagp);
printf("Root2 = %f -i %f\n", realp, imagp);
}
else if (disc == 0)
{
printf("Roots are real and equal\n");
root1 = -b / (2.0 * a);
root2 = root1;
printf("Root1 = %f\n", root1);
printf("Root2 = %f\n", root2);
}
else if (disc > 0 )
{
printf("Roots are real and distinct \n");
root1 =(-b + sqrt(disc)) / (2.0 * a);
root2 =(-b - sqrt(disc)) / (2.0 * a);
printf("Root1 = %f \n", root1);
printf("Root2 = %f \n", root2);
}
}
return 0;
}Output:
#include<stdio.h>
int main() {
int year;
printf("Enter the year:");
scanf("%d",&year);
if(year%4==0)
printf("It is a leap year.\n");
else
printf("Not a leap year.\n");
return 0;
}Output:
#include<stdio.h>
int main(){
int x,i=0;
printf("Enter a number: ");
scanf("%d",&x);
while(i<=10)
{
printf("%d X %d = %d\n",x,i,x*i);
i += 1;
}
return 0;
}
Output:
#include <stdio.h>
int main() {
char Operator;
float num1, num2, result = 0;
printf("\n Please Enter an Operator (+, -, *, /) : ");
scanf("%c", &Operator);
printf("\n Please Enter the Values for two Operands: num1 and num2 : ");
scanf("%f%f", &num1, &num2);
switch(Operator)
{
case '+':
result = num1 + num2;
break;
case '-':
result = num1 - num2;
break;
case '*':
result = num1 * num2;
break;
case '/':
result = num1 / num2;
break;
default:
printf("\n You have enetered an Invalid Operator ");
}
printf("\n The result of %.2f %c %.2f = %.2f", num1, Operator, num2, result);
return 0;
}Output:
#include<stdio.h>
void main()
{
int x;
printf("Enter a number:");
scanf("%d",&x);
int reverse,rem;
int y=x;
while(y!=0)
{
rem=y%10;
reverse=reverse*10+rem;
y=y/10;
}
printf("Reversed number is %d \n",reverse);
}
Output:
#include<stdio.h>
void main()
{
int x;
printf("Enter a number:");
scanf("%d",&x);
int reverse,rem;
int y=x;
while(y!=0)
{
rem=y%10;
reverse=reverse*10+rem;
y=y/10;
}
printf("Reversed number is %d \n",reverse);
if(x==reverse)
printf("The number is a palindrome\n");
else
printf("It is not a palindrome\n");o Output:
include<stdio.h>
void main(){
int n,counter=0;
printf("Enter a number: ");
scanf("%d",&n);
int i=n;
while(i!=0)
{
if(n%i==0){
counter=counter+1;
}
i=i-1;
}
if(counter>2)
printf("The number is not prime.\n");
else
printf("The number is prime.\n");
} Output:
#include<stdio.h>
int main(){
int a,b,i,end;
printf("Enter a number: ");
scanf("%d",&end);
printf("The series of prime numbers till %d is: \n",end);
for(a=1;a<=end;a++)
{
i=0;
for(b=1;b<=a;b++)
{
if(a%b==0)
i++;
}
if(i==2)
printf("\n%d \t",a);
}
return 0;
} Output:
#include<stdio.h>
void main(){
int a,b,rem,x=0;
printf("Enter a number: ");
scanf("%d",&a);
b=a;
while(a!=0)
{
rem=a%10;
x= x+ rem*rem*rem;
a=a/10;
}
if(x==b)
printf("The number is armstrong\n");
else
printf("The number is not armstrong\n");
} Output:
#include<stdio.h>
void main(){
for(int i=1;i<=5;i++)
{
for(int j=1;j<=i;j++)
{
printf("%d ",j);
}
printf("\n");
}
} Output:
#include<stdio.h>
int main()
{
int i, space, k=0;
for(i=1; i<=7; ++i, k=0)
{
for(space=1; space<=7-i; ++space)
{
printf(" ");
}
while(k != 2*i-1)
{
printf("* ");
++k;
}
printf("\n");
}
return 0;
}
Output:
include<stdio.h>
void main(){
int a[10];
int i,n;
printf("Enter the number of elements to be entered in the array:");
scanf("%d",&n);
printf("Enter the elements of array:");
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
int max=a[0];
for(i=0;i<n;i++){
if(a[i]>max)
{
max=a[i];
}
}
printf("The largest number is %d\n",max);
} Output:
#include<stdio.h>
void main()
{
int a[10],n;
printf("ENter number of elements of array: ");
scanf("%d",&n);
printf("Enter the elements of array: ");
int i,sum;
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
sum=sum+a[i];
}
printf("The sum of the elements of array is: %d\n",sum);
}
Output:
#include<stdio.h>
int main(){
int a[3][3],b[3][3],c[3][3],i,j;
printf("Enter the first matrix:\n ");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}
printf("\n");
}
printf("Enter the second matrix: \n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&b[i][j]);
}
printf("\n");
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
c[i][j]=a[i][j]+b[i][j];
}
}
printf("The addition of two matrices is:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("\t %d",c[i][j]);
}
printf("\n");
}
return 0;
Output:
#include<stdio.h>
void main()
{
int a[3][3],b[3][3],c[3][3],i,j,k;
int sum=0;
printf("Enter the first matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("Enter the sceond matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&b[i][j]);
}
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
sum=0;
for(k=0;k<3;k++)
{
sum=sum+a[i][j]*b[i][j];
c[i][j]=sum;
}
}
}
printf("The multiplication of two matrices is:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("\t%d",c[i][j]);
}
printf("\n");
}
}Output:
#include<stdio.h>
#include <string.h>
int main() {
char s[1000];
int i,n,c=0;
printf("Enter the string : ");
scanf("%s",s);
n=strlen(s);
for(i=0;i<n/2;i++)
{
if(s[i]==s[n-i-1])
c++;
}
if(c==i)
printf("%s is a palindrome.\n",s);
else
printf("%s is not a palindrome.\n",s);
return 0;
}Output:
#include <stdio.h>
#include <stdlib.h>
int find_length(char string[]) {
int len = 0, i;
for (i = 0; string[i] != '\0'; i++) {
len++;
}
return len;
}
void join_strings(char string1[], char string2[]) {
int i, len1, len2;
len1 = find_length(string1);
len2 = find_length(string2);
for (i = len1; i < len1 + len2; i++) {
string1[i] = string2[i - len1];
}
string1[i] = '\0'; //adding null character at the end of input
}
/*returns 0 if thery are same otherwise returns 1*/
int compare_strings(char string1[], char string2[]) {
int len1, len2, i, count = 0;
len1 = find_length(string1);
len2 = find_length(string2);
if (len1 != len2)
return 1;
for (i = 0; i < len1; i++) {
if (string1[i] == string2[i])
count++;
}
if (count == len1)
return 0;
return 1;
}
void copy_string(char destination[], char source[]) {
int len, i;
len = find_length(source);
for (i = 0; i < len; i++) {
destination[i] = source[i];
}
destination[i] = '\0';
}
int main() {
char string1[20], string2[20]; //string variables declaration with size 20
int choice;
while (1) {
printf("\n1. Find Length \n2. Concatenate \n3. Compare \n4. Copy \n5. Exit\n");
printf("Enter your choice: ");
scanf("%d", & choice);
switch (choice) {
case 1:
printf("Enter the string: ");
scanf("%s", string1);
printf("The length of string is %d", find_length(string1));
break;
case 2:
printf("Enter two strings: ");
scanf("%s%s", string1, string2);
join_strings(string1, string2);
printf("The concatenated string is %s", string1);
break;
case 3:
printf("Enter two strings: ");
scanf("%s%s", string1, string2);
if (compare_strings(string1, string2) == 0) {
printf("They are equal");
} else {
printf("They are not equal");
}
break;
case 4:
printf("Enter a string: ");
scanf("%s", string1);
printf("String1 = %s\n");
printf("After copying string1 to string 2\n");
copy_string(string2, string1);
printf("String2 = %s", string2);
break;
case 5:
exit(0);
}
}
return 0;
}Output:
#include <stdio.h>
void swap(int *a, int *b);
int main() {
int x, y;
printf("Enter the value of x and y\n");
scanf("%d%d",&x,&y);
printf("Before Swapping\nx = %d\ny = %d\n", x, y);
swap(&x, &y);
printf("After Swapping\nx = %d\ny = %d\n", x, y);
return 0;
}
void swap(int *a, int *b)
{
int temp;
temp = *b;
*b = *a;
*a = temp;
}Output:
include<stdio.h>
void swap(int x,int y);
void main()
{
int n1,n2;
printf("Enter n1: ");
scanf("%d",&n1);
printf("Enter n2 :");
scanf("%d",&n2);
void swap(int n1,int n2);
printf("after swapping: n1= %d and n2= %d\n",n2,n1);
}
void swap(int x,int y){
printf("Enter 1st number x: ");
scanf("%d",&x);
printf("Enter 2nd number y: ");
scanf("%d",&y);
int temp;
temp=x;
x=y;
y=temp;
printf("After swapping: x = %d and y= %d",y,x);
}Output:
#include<stdio.h>
int factorial(int m);
int main(){
int n,result;
printf("Enter a number: ");
scanf("%d",&n);
result = factorial(n);
printf("The factorial of the number is: %d\n",result);
}
int factorial(int m)
{
if(m<0)
printf("Factorial of a negative number is not possible.");
else if(m==0 || m==1)
return 1;
else
return (m*factorial(m-1));
} Output:
#include<stdio.h>
void main()
{
int a,fact=1;
printf("Enter a number: ");
scanf("%d",&a);
int i=a;
while(i>0)
{
fact = fact*i;
i= i-1;
}
printf("The factorial of the entered number is %d \n",fact);
}
Output:
#include<stdio.h>
int fibo(int n);
int main(){
int n,i=0,c;
printf("Enter a number: ");
scanf("%d",&n);
printf("Fibonacci series:\n");
for(c=1;c<=n;c++)
{
printf("%d\n",fibo(i));
i=i+1;
}
return 0;
}
int fibo(int n){
if(n==0)
return 0;
else if(n==1)
return 1;
else
return (fibo(n-1)+fibo(n-2));
} Output:
#include<stdio.h>
int main()
{
int n1=0,n2=1,n3,i,number;
printf("Enter the number of elements:");
scanf("%d",&number);
printf("%d \n%d\n",n1,n2);
for(i=2;i<number;++i)
{
n3=n1+n2;
printf("%d\n",n3);
n1=n2;
n2=n3;
}
return 0;
}
Output:
#include<stdio.h>
int average();
void main(){
int avg;
avg=average();
printf("The average of five numbers is: %d\n",avg);
}
int average()
{
int a,b,c,d,e,result;
printf("Enter the five numbers: ");
scanf("%d %d %d %d %d",&a,&b,&c,&d,&e);
result=(a+b+c+d+e)/5;
return result;
}
Output:
#include <stdio.h>
int main()
{
int array[100], search, c, n;
printf("Enter number of elements in array\n");
scanf("%d", &n);
printf("Enter %d integer(s)\n", n);
for (c = 0; c < n; c++)
scanf("%d", &array[c]);
printf("Enter a number to search\n");
scanf("%d", &search);
for (c = 0; c < n; c++)
{
if (array[c] == search)
{
printf("%d is present at location %d.\n", search, c+1);
break;
}
}
if (c == n)
printf("%d isn't present in the array.\n", search);
return 0;
}
Output:
#include <stdio.h>
int main()
{
int c, first, last, middle, n, search, array[100];
printf("Enter number of elements\n");
scanf("%d",&n);
printf("Enter %d integers\n", n);
for (c = 0; c < n; c++)
scanf("%d",&array[c]);
printf("Enter value to find\n");
scanf("%d", &search);
first = 0;
last = n - 1;
middle = (first+last)/2;
while (first <= last) {
if (array[middle] < search)
first = middle + 1;
else if (array[middle] == search) {
printf("%d found at location %d.\n", search, middle+1);
break;
}
else
last = middle - 1;
middle = (first + last)/2;
}
if (first > last)
printf("Not found! %d isn't present in the list.\n", search);
return 0;
}Output:
#include <stdio.h>
int main()
{
int array[100], n, c, d, swap;
printf("Enter number of elements\n");
scanf("%d", &n);
printf("Enter %d integers\n", n);
for (c = 0; c < n; c++)
scanf("%d", &array[c]);
for (c = 0 ; c < n - 1; c++)
{
for (d = 0 ; d < n - c - 1; d++)
{
if (array[d] > array[d+1])
{
swap = array[d];
array[d] = array[d+1];
array[d+1] = swap;
}
}
}
printf("Sorted list in ascending order:\n");
for (c = 0; c < n; c++)
printf("%d\n", array[c]);
return 0;
}Output:
#include <stdio.h>
struct student
{
char name[50];
int roll;
float marks;
} s[10];
int main()
{
int i;
printf("Enter information of students:\n");
for(i=0; i<3; ++i)
{
s[i].roll = i+1;
printf("\nFor roll number%d,\n",s[i].roll);
printf("Enter name: ");
scanf("%s",s[i].name);
printf("Enter marks: ");
scanf("%f",&s[i].marks);
printf("\n");
}
printf("Displaying Information:\n\n");
for(i=0; i<3; ++i)
{
printf("\nRoll number: %d\n",i+1);
printf("Name: ");
puts(s[i].name);
printf("Marks: %.1f",s[i].marks);
printf("\n");
}
return 0;
}Output:
#include<stdio.h>
int main(){
int a[3][3];
printf("Enter a 3X3 matrix: ");
for(int i=0;i<3;i++)
{
for(int j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("The matrix you entered is:\n");
for(int i=0;i<3;i++)
{
for(int j=0;j<3;j++)
{
printf("%d\t",a[i][j]);
}
printf("\n");
}
printf("The transpose of the matrix is:\n ");
for(int i=0;i<3;i++)
{
for(int j=0;j<3;j++)
{
printf("%d\t",a[j][i]);
}
printf("\n");
}
}Output:
#include <stdio.h>
int main() {
int a;
int *p;
printf("Enter a value: ");
scanf("%d",&a);
p = &a;
printf("Address of the value is: %d\n", p);
return 0;
}
Output:
#include <stdio.h>
int main()
{
int data[5],i;
printf("Enter elements: ");
for(i = 0; i < 5; ++i)
scanf("%d", data + i);
printf("You entered: \n");
for(i = 0; i < 5; ++i)
printf("%d\n", *(data + i));
return 0;
}Output:
