Ex.1 Write a program to print the following pattern 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5 Ex.2 Write a program to find bigger of three integers. Ex.3 Write a program to calculate GCD between two numbers. Ex.4 Write a program to find transpose of matrix. Ex.5 Write a program which deletes an element from an array & display all other elements. Ex.6 Write a program to calculate XA+YB where A & B are matrix & X=2, Y=3. Ex.7 Write a program to calculate the total amount of money in the piggy bank, given that coins of Rs.10, Rs.5, Rs.2, RS.1. & many more.....

1. Prathamesh Deshpande
G-(04)
Q.1 Write a program to print the following pattern
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
C programming code:
#include<stdio.h>
int main()
{
int i,j;
char input,temp='1';
printf("Enter number you want in triangle at last row: ");
scanf("%c",&input);
for(i=1;i<=(input-'1'+1);++i)
{
for(j=1;j<=i;++j)
printf("%c",temp);
++temp;
printf("n");
}
return 0;
}
Output:
Q.2 Write a program to find bigger of three integers.
C programming code:
#include <stdio.h>
int main()
{
int array[100], maximum, size, c, location = 1;
printf("Enter the number of elements in arrayn");
scanf("%d", &size);
printf("Enter %d integersn", size);
for (c = 0; c < size; c++)
scanf("%d", &array[c]);
maximum = array[0];
for (c = 1; c < size; c++)
{
if (array[c] > maximum)
{
maximum = array[c];
location = c+1;
}
}

2. printf("Maximum element is present at location %d and it's value is
%d.n", location, maximum);
return 0;
}
Output:
Q.3 Write a program to calculate GCD between two numbers.
C programming code:
#include <stdio.h>
int gcd(int n1, int n2);
int main()
{
int n1, n2;
printf("Enter two positive integers: ");
scanf("%d%d", &n1, &n2);
printf("GCD of %d and %d = %d", n1, n2, gcd(n1,n2));
return 0;
}
int gcd(int n1, int n2)
{
if (n2!=0)
return gcd(n2, n1%n2);
else
return n1;
}
Output:
Q.4 Write a program to find transpose of matrix.
C programming code:
#include <stdio.h>
int main()
{
int m, n, c, d, matrix[10][10], transpose[10][10];
printf("Enter the number of rows and columns of matrixn");
scanf("%d%d", &m, &n);
printf("Enter the elements of matrixn");
for (c = 0; c < m; c++)
for(d = 0; d < n; d++)
scanf("%d",&matrix[c][d]);
for (c = 0; c < m; c++)
for( d = 0 ; d < n ; d++ )
transpose[d][c] = matrix[c][d];
printf("Transpose of entered matrix :-n");
for (c = 0; c < n; c++) {
for (d = 0; d < m; d++)

3. printf("%dt",transpose[c][d]);
printf("n");
}
return 0;
}
Output:
Q.5 Write a program which deletes an element from an array & display all other elements.
C programming code:
#include <stdio.h>
int main()
{
int array[100], position, c, n;
printf("Enter number of elements in arrayn");
scanf("%d", &n);
printf("Enter %d elementsn", n);
for ( c = 0 ; c < n ; c++ )
scanf("%d", &array[c]);
printf("Enter the location where you wish to delete elementn");
scanf("%d", &position);
if ( position >= n+1 )
printf("Deletion not possible.n");
else
{ for ( c = position - 1 ; c < n - 1 ; c++ )
array[c] = array[c+1];
printf("Resultant array isn");
for( c = 0 ; c < n - 1 ; c++ )
printf("%dn", array[c]);
}
return 0;
}
Output:

4. Q.6 Write a program to calculate XA+YB where A & B are matrix & X=2, Y=3.
C programming code:
#include <stdio.h>
int main()
{
int m, n, c, d, first[10][10], second[10][10], sum[10][10];
printf("Enter the number of rows and columns of matrixn");
scanf("%d%d", &m, &n);
printf("Enter the elements of first matrixn");
for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &first[c][d]);
printf("Enter the elements of second matrixn");
for (c = 0; c < m; c++)
for (d = 0 ; d < n; d++)
scanf("%d", &second[c][d]);
printf("Sum of entered matrices:-n");
for (c = 0; c < m; c++)
{ for (d = 0 ; d < n; d++)
{ sum[c][d] = (2*(first[c][d]))+(3*(second[c][d]));
printf("%dt", sum[c][d]);
}
printf("n");
} return 0;
}
Output:
Q.7 Write a program to calculate the total amount of money in the piggybank, given that coins of
Rs.10,
Rs.5, Rs.2, RS.1.
C programming code:
#include<stdio.h>
int main()
{
int a, b, c, d, e;
printf("Enter no. coins of Rs10 Rs5 Rs2 Rs1 n");
scanf("%d%d%d%d",&a,&b,&c,&d);
e = (10*a)+(5*b)+(2*c)+d;
printf("Sum of money in piggybank = %dn",e);
return 0;
}

5. Output:
Q.8 Write a program to calculate sum of squares of first n even no.
C programming code:
#include<stdio.h>
int main()
{
int i, j, sum = 0, n;
printf("Enter no of terms");
scanf("%d",&n);
printf("nEven numbers and their square:n");
for(i =1; i <=n; i++)
{ if(i % 2 == 0)
{ j = i * i;
printf("%dtt%d",i,j);
printf("n");
sum = sum + j;
}
}
printf("nnSum of even numbers square is: %d",sum);
return 0;
}
Output:
Q.9 Write a program to calculate exp(X,Y) using recursive functions.
C programming code:
#include <stdio.h>
long power (int, int);
int main()
{
int Y, X;
long result;
printf("Enter a number X : ");
scanf("%d", &X);
printf("Enter it's power Y : ");
scanf("%d", &Y);

6. result = power(X, Y);
printf("%d^%d is %ld", X, Y, result);
return 0;
}
long power (int X, int Y)
{
if (Y)
{
return (X * power(X, Y - 1));
}
return 1;
}
Output:
Q.10 Write a program to enter a number from 1 to 7 & display it’s corresponding day of week using
Switch - case statement.
C programming code:
#include <stdio.h>
int main()
{
int week;
printf("Enter day of week to get it's corresponding day (1-7): ");
scanf("%d", &week);
switch(week)
{
case 1: printf("MONDAY");
break;
case 2: printf("TUESDAY");
break;
case 3: printf("WEDNESDAY");
break;
case 4: printf("THURSDAY");
break;
case 5: printf("FRIDAY");
break;
case 6: printf("SATURDAY");
break;
case 7: printf("SUNDAY");
break;
default: printf("Invalid input! Please enter week number
between 1-7");
}
return 0;
}
Output: