C program-5

1. /* Write a C program to input real numbers and find the *
* mean, variance and standard deviation */

#include
#include
#define MAXSIZE 10
main()
{
float x[MAXSIZE];
int i, n;
float avrg, var, SD, sum=0, sum1=0;

clrscr();

printf("Enter the value of N\n");
scanf("%d", &n);

printf("Enter %d real numbers\n",n);
for(i=0; i
#define MAX 4

main()
{
int a[MAX], i, l1,l2, s, temp;
clrscr();

printf("Enter %d integer numbers\n", MAX);
for (i=0; i < MAX; i++) { scanf("%d", &a[i]); } printf("Input interger are\n"); for (i=0; i < MAX; i++) { printf("%5d", a[i]); } printf("\n"); l1 = a[0]; /*assume first element of array is the first largest*/ l2 = a[1]; /*assume first element of array is the second largest*/ if (l1 < l2) { temp = l1; l1 = l2; l2 = temp; } for (i=2;i<4;i++) { if (a[i] >= l1)
{
l2 = l1;
l1 = a[i];
}
else if(a[i] > l2)
{
l2= a[i];
}
}
printf("\n%d is the first largest\n", l1);
printf("%d is the second largest\n", l2);
printf("\nAverage of %d and %d = %d\n", l1,l2, (l1+l2)/2);
}
/*-----------------------------------
Output
RUN 1
Enter 4 integer numbers
45
33
21
10
Input interger are
45 33 21 10

45 is the first largest
33 is the second largest

Average of 45 and 33 = 39

RUN 2
Enter 4 integer numbers
12
90
54
67
Input interger are
12 90 54 67

90 is the first largest
67 is the second largest

Average of 90 and 67 = 78

RUN 3
Enter 4 integer numbers
100
200
300
400
Input interger are
100 200 300 400

400 is the first largest
300 is the second largest

Average of 400 and 300 = 350

------------------------------------*/

**************************************************************************


3. /* Write a C program to evaluate the given polynomial *
* P(x)=AnXn + An-1Xn-1 + An-2Xn-2+... +A1X + A0, by *
* reading its coefficents into an array. [Hint:Rewrite *
* the polynomial as *
* P(x) = a0 + x(a1+x(a2+x(a3+x(a4+x(...x(an-1+xan)))) *
* and evalate the function starting from the inner loop]*/
#include
#define MAXSIZE 10
main()
{
int a[MAXSIZE];
int i, N,power;
float x, polySum;

clrscr();
printf("Enter the order of the polynomial\n");
scanf("%d", &N);

printf("Enter the value of x\n");
scanf("%f", &x);
/*Read the coefficients into an array*/
printf("Enter %d coefficients\n",N+1);
for (i=0;i <= N;i++) { scanf("%d",&a[i]); } polySum = a[0]; for (i=1;i<= N;i++) { polySum = polySum * x + a[i]; } power = N; /*power--;*/ printf("Given polynomial is:\n"); for (i=0;i<= N;i++) { if (power < 0) { break; } /* printing proper polynomial function*/ if (a[i] > 0)
printf(" + ");
else if (a[i] < 0) printf(" - "); else printf (" "); printf("%dx^%d ",abs(a[i]),power--); } printf("\nSum of the polynomial = %6.2f\n",polySum); } /*------------------ Output RUN 1 Enter the order of the polynomial 2 Enter the value of x 2 Enter 3 coefficients 3 2 6 Given polynomial is: + 3x^2 + 2x^1 + 6x^0 Sum of the polynomial = 22.00 RUN 2 Enter the order of the polynomial 4 Enter the value of x 1 Enter 5 coefficients 3 -5 6 8 -9 Given polynomial is: + 3x^4 - 5x^3 + 6x^2 + 8x^1 - 9x^0 Sum of the polynomial = 3.00 --------------------*/ ********************************************************************* 4. /* Write a C program to read two matrices A (MxN) and B(MxN)* * and perform addition OR subtraction of A and B. Find the * * trace of the resultant matrix. Output the given matrix, * * their sum or Differences and the trace. */ #include

main()
{
int A[10][10], B[10][10], sumat[10][10], diffmat[10][10];
int i, j, M,N, option;
void trace (int arr[][10], int M, int N);
clrscr();
printf("Enter the order of the matrice A and B\n");
scanf("%d %d", &M, &N);

printf("Enter the elements of matrix A\n");
for(i=0; i

main()
{
int i,j,M,N;
int A[10][10], B[10][10];
int transpose(int A[][10], int r, int c); /*Function prototype*/
clrscr();

printf("Enter the order of matrix A\n");
scanf("%d %d", &M, &N);
printf("Enter the elements of matrix\n");
for(i=0;i {
for(j=0;j {
scanf("%d",&A[i][j]);
}
}
printf("Matrix A is\n");
for(i=0;i {
for(j=0;j {
printf("%3d",A[i][j]);
}
printf("\n");
}
/* Finding Transpose of matrix*/
for(i=0;i {
for(j=0;j {
B[i][j] = A[j][i];
}
}

printf("Its Transpose is\n");
for(i=0;i {
for(j=0;j {
printf("%3d",B[i][j]);
}
printf("\n");
}

} /*End of main()*/
/*---------------------------------------
Output
Enter the order of matrix A
3 3
Enter the elements of matrix
1
2
3
4
5
6
7
8
9
MatrixxA is
1 2 3
4 5 6
7 8 9
Its Transpose is
1 4 7
2 5 8
3 6 9
-----------------------------*/