Practical-file

PROGRAMMING FOR PROBLEM SOLVING ESC-18105

NAME- Tushar Garg

ROLL NO- 1915082

BRANCH- COMPUTER SCIENCE & ENGINEERING

SECTION- CS(B)

1.To add two numbers

#include<stdio.h>
int main()
{
int a,b,sum=0;
printf("Enter two numbers \n");
scanf("%d%d",&a,&b);
sum=a+b;
printf("Sum of two numbers is %d \n",sum);
return 0;
}

Output

Enter two numbers
5
10
Sum of two numbers is 15

2.To find average of n numbers

#include<stdio.h>
int main()
{
int n,i,a[10];
int sum=0,avg;
printf("Enter value of n : \n");
scanf("%d",&n);
printf("Enter %d numbers: \n ",n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
sum=sum+a[i];
}
avg=sum/n;
printf("Average is %d \n",avg);
return 0;
}

Output

Enter value of n
5
Enter 5 numbers
1
2
3
4
5
Average is 3

3. To print week days using switch statement

#include<stdio.h>
int main()
{
int c;
printf(" Enter the value of day");
scanf("%d",&c);
switch (c)
{
case 1:
printf("Monday \n");
break;
case 2:
printf("Tuesday \n");
break;
case 3:
printf("Wednesday \n"); break;
case 4:
printf("Thursday \n"); break;
case 5:
printf("Friday \n");
break;
case 6:
printf("Saturday \n");
break;
case 7:
printf("Sunday \n");
break;
default :
printf("Wrong choice \n"); }
return 0;
}

Output

Enter the value of day
5
Friday

4. To check whether a number is odd or even

#include<stdio.h>
int main()
{
int number;
printf("Enter any number");
scanf("%d",&number);
if(number%2==0)
printf("Number is even");
else
printf("Number is odd");
return 0;
}

Output

Enter any number
5
Number is odd

5. To print the table of 2

#include<stdio.h>
int main()
{
int i,a=2,b=1;
printf("The table of 2 :");
printf("\n ============ \n");
for(i=1;i<=10;i++)
{
b=2*i;
printf("%d * %d = %d \n",a,i,b);
}
return 0;
}

Output

 The table of 2    
 ----------------  
 ----------------  

2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
2 * 4 = 8 2 * 5 = 10 2 * 6 = 12 2 * 7 = 14
2 * 8 = 16 2 * 9 = 18
2 * 10 = 20

6. To check whether a number is armstrong or not

#include<stdio.h>
int main()
{
int number,temp;
int arm=0,digit;
printf("Enter any number");
scanf("%d",&number);
temp=number;
while(temp>0)
{
digit=temp%10;
arm=arm+(digit * digit * digit);
temp/=10;
}
if(arm==number)
printf("Armstrong\n");
else
printf("Not armstrong\n");
return 0;
}

Output

Enter any number 153 Armstrong

7. To print calculator

#include<stdio.h>
void main()
{
puts(" _____________________ ");
puts("| _____________________ |\n");
puts("| 1 | 2 | 3 |\t|\n");
puts("| ___ | ___ | ___ |\t|\n");
puts("| 4 | 5 | 6 | + |\n");
puts("| ___ | ___ | ___ | ___ |\n");
puts("| 7 | 8 | 9 | - |\n");
puts("| ___ | ___ | ___ | ___ |\n");
puts("|\t0\t | * |\n");
puts("| _______________ | ___ |\n");
}

8.Bubble Sort

#include<stdio.h>
int main()
{
int a[20],i,n,k,temp;
printf("Enter size of array\n");
scanf("%d",&n);
printf("Enter %d elements of array:\n",n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
for(k=0;k<n-1;k++)
{
for(i=0;i<n-k-1;i++)
{
if(a[i]>a[i+1])
{
temp=a[i];
a[i]=a[i+1];
a[i+1]=temp;
}
}
}
printf("Array elements after sorting \n");
for(i=0;i<n;i++)
{
printf("%d",a[i]);
printf("\n");
}
return 0;
}

Output

9. Binary Search

#include<stdio.h>
int main()
{
int i,a[10],n,lb=0,ub=9,mp;
printf("Enter 10 numbers in ascending order \n");
for(i=0;i<10;i++)
{
scanf("%d",&a[i]);
}
printf("Enter number to be searched \n ");
scanf("%d",&n);
mp=((lb+ub)/2);
while(lb<=ub)
{
if(a[mp]==n)
{
printf("Number is found\n");
break;
}
else if(a[mp]>n)
{
ub=mp-1;
}
else
{
lb=mp+1;
}
mp=((lb+ub)/2);
}
if(lb>ub)
{
printf("Number not found ");
}
return 0;
}

10.To find factorial of a number

#include<stdio.h>
int main()
{
int i,n,fact=1;
printf("Enter the number whose factorial is to be find :\n");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
fact=fact*i;
}
printf("Factorial of given number is : %d \n",fact);
return 0;
}

11.Fizz Buzz

#include<stdio.h>
int main()
{
int n;
for(n=1;n<=30;n++)
{
if(n%3==0 && n%5==0)
printf("FizzBuzz");
else if(n%3==0)
printf("Fizz \n");
else if(n%5==0)
printf("Buzz \n");
else
printf(" \n %d \n ",n);
}
return 0;
}

12.To find sum of first 100 numbers

#include<stdio.h>
int main()
{
int i,sum=0;
for(i=1;i<=100;i++)
{
sum=sum+i;
}
printf("Sum of first 100 numbers is %d \n",sum);
return 0;
}

13. To find greater of two numbers

#include<stdio.h>
int main()
{
int a,b;
printf("Enter the value of a and b");
scanf("%d%d",&a,&b);
if(a>b)
{
printf("a is grteater");
}
else
{
printf("b is greater"); }
return 0;
}

14.To find greatest of 3 numbers

#include<stdio.h>
int main()
{
int a,b,c;
printf("Enter the three numbers to check greatest \n");
scanf("%d%d%d",&a,&b,&c);
if(a>b&&a>c)
{
printf("1st number is greatest \n");
}
else if(b>c&&b>a)
{
printf("2nd number is greatest \n");
}
else
{
printf("3rd number is greatest \n");
}
return 0;
}

15. To find gcd of two numbers

#include<stdio.h>
int main()
{
int m,n,r=1;
printf("Enter two numbers to find gcd \n");
scanf("%d%d",&m,&n);
while(r!=0)
{
r=m%n;
m=n;
n=r;
}
printf("\n GCD =%d\n ",m);
return 0;
}

16.To check whether a year is leap or not

#include<stdio.h>
int main()
{
int year;
printf("Enter the value of year");
scanf("%d",&year);
if(year%4==0)
printf(" The year is Leap \n");
else
printf(" \n The year is not leap \n");
return 0;
}

17. Linear search

#include<stdio.h>
int main()
{
int a[5],i,s,f;
printf("Enter 5 numbers\n");
for(i=0;i<5;i++)
{
scanf("%d",&a[i]);
}
printf("Enter number to be searched\n");
scanf("%d",&s);
for(i=0;i<5;i++)
{
if(s==a[i])
{
f=1;
break;
}
}
if(f==1)
printf("Number is found \n");
else
printf("Number is not found \n");
return 0;
}

18.To find sum of two matrices

#include<stdio.h>
int main()
{
int m,n,a[5][5],b[5][5],c[5][5],i,j;
printf("Enter the size of matrix");
scanf("%d%d",&m,&n);
printf("Enter the elements of matrix A\n");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
scanf("%d",&a[i][j]);
}
printf("Enter the elements of matrix B\n");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
scanf("%d",&b[i][j]);
}
printf("Sum of two matrices is :\n");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
c[i][j]=a[i][j]+b[i][j];
printf("%d ",c[i][j]);
}
printf("\n");
}
return 0;
}

19.To find transpose of matrix

#include<stdio.h>
int main()
{
int a[10][10],b[10][10],m,n,i,j;
printf("Enter the size of matrix A as mand n:\n");
scanf("%d%d",&m,&n);
printf("Enter the elements of matrix A\n");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{ scanf("%d",&a[i][j]);
}
printf("\n");
}
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
b[i][j]=a[j][i];
}
}
printf("Transpose of matrix is :\n");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
printf("%d ",b[i][j]);
} printf("\n");
}
return 0;
}

20. To find sum of digits of a number

#include<stdio.h>
int main()
{
int sum=0,digit;
int n,temp;
printf("Enter the number to cal. the sum of digits");
scanf("%d",&n);
temp=n;
while(temp>0)
{
digit=temp%10;
temp/=10;
sum+=digit;
}
printf("\n Sum of digits of %d = %d \n",n,sum);
return 0;
}

21. To check whether a number is palindrome or not

#include<stdio.h>
int main()
{
int sum=0,digit;
int temp,n;
printf("Enter any number");
scanf("%d",&n);
temp=n;
while(temp>0)
{
digit=temp%10;
temp/=10;
sum=sum*10+digit;
}
if(n==sum)
printf("\n%d is a palindrome\n",n);
else
printf("\n%d is not a palindrome\n",n);
return 0;
}

22.To swap two numbers using call by value method

#include<stdio.h>
void swap(int a,int b); //Function declaration

void main()
{
int x,y;
printf("\n Enter value for x: ");
scanf("%d",&x);
printf("\n Enter value for y: ");
scanf("%d",&y);

printf("\n Before calling swap function\n");
printf("\n Value of x = %d, value of y = %d\n",x,y);

swap(x,y); //Function call, with only values of x & y

printf("\n After returning from swap function");
printf("\n Value of x = %d, value of y = %d\n",x,y);
}

void swap(int a,int b)
{
int temp;
printf("\n Inside the function\n");
printf("\n Value of a = %d, value of b = %d before swap\n",a,b);
temp = a;
a = b;
b = temp;
printf("\n Value of a = %d, value of b = %d after swap\n",a,b);
}

23. To swap two numbers using call by reference

#include<stdio.h>
void swap( int * , int * ); //Function declaration

void main()
{
int x,y;
printf("\nEnter value for x: ");
scanf("%d",&x);
printf("\nEnter value for y: ");
scanf("%d",&y);
printf("\nBefore calling swap function\n");
printf("\nValue of x=%d, value of y=%d\n",x,y);

swap(&x,&y); //Function call, with addresses of x & y

printf("\nAfter returning from swap function\n");
printf("\nValue of x=%d, value of y=%d\n",x,y);
}
void swap( int * a , int * b )
{ //Function definition
int temp;
printf("\nInside the function\n");
printf("\nValue of *a=%d, value of *b=%d before swap\n",*a,*b);
temp = *a;
*a = *b;
*b = temp;
printf("\nValue of *a=%d, value of *b=%d after swap\n",*a,*b);
}

24. To enter details of employee using structure

#include<stdio.h>
#include<string.h>
struct employee
{
int code;
char name[25],department[15];
float salary;
};
void main()
{
struct employee aemployee;
printf("Enter employee code \n");
scanf("%d",&aemployee.code);
printf("Enter employee's name \n");
scanf("%s",&aemployee.name);
printf("Enter employee's department \n");
scanf("%s",&aemployee.department);
printf("Enter employee salary \n");
scanf("%f",&aemployee.salary);
printf("Particulars of employee are :\n");
printf("\n Employee's code %d",aemployee.code);
printf("\n Employee's name %s",aemployee.name);
printf("\n Employee's department %s",aemployee.department);
printf("\n Employee salary %2f \n ",aemployee.salary);
}

25.To print product of two fraction using structures

#include<stdio.h>

struct fr
{
float num;
float denom;
};

int main()
{
struct fr f1,f2,res;

printf("Enter numerator,denominator of 1st fraction: ");
scanf("%f/%f",&f1.num,&f1.denom);
printf("Enter numerator,denominator of 2nd fraction: ");
scanf("%f/%f",&f2.num,&f2.denom);

res.num=f1.num * f2.num;
res.denom=f1.denom * f2.denom;

printf("The resultant product fraction is %.2f/%.2f.\n",res.num,res.denom);

return 0;
}

By Tushar Garg