Write a C program to read in two numbers, x and n, and then compute the sum of this geometric progression: 1+x+x2+x3+????

/*Write a C program to read in two numbers, x and n, and then compute the sum of this geometric progression:
1+x+x2+x3+????.+xn For example: if n is 3 and x is 5, then the program computes 1+5+25+125.
Print x, n, the sum Perform error checking. For example, the formula does not make sense
for negative exponents - if n is less than 0. Have your program print an error message if n<0, 
then go back and read in the next pair of numbers of without computing the sum.
Are any values of x also illegal ? If so, test for them too. */

#include<stdio.h>
#include<conio.h>
#include<math.h>

void main()
{
int s_sum,i,x,n;

clrscr();
printf("Enter the values for x and n:");
scanf("%d %d",&x,&n);
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Write a C program to construct a pyramid of numbers.

/* Write a C program to construct a pyramid of numbers. */

#include<stdio.h>
#include<conio.h>

void main()
{
int num,i,y,x=35;
clrscr();
printf("\nEnter the number to generate the pyramid:\n");
scanf("%d",&num);
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Write a C program to generate Pascal's triangle.

/* Write a C program to generate Pascal's triangle. */

#include<stdio.h>
#include<conio.h>

void main()
{
int bin,p,q,r,x;
clrscr();
bin=1;
q=0;

printf("Rows you want to input:");
scanf("%d",&r);
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Write a C program that displays the position or index in the string S where the string T begins, or - 1 if S doesn't contain T.

/* Write a C program that displays the position or index in the string S
  where the string T begins, or - 1 if S doesn't contain T.
*/

#include<stdio.h>
#include<string.h>
#include<conio.h>

void main()
{
 char s[30], t[20];
 char *found;
 clrscr();

/* Entering the main string */
 puts("Enter the first string: ");
 gets(s);
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Write a C program to count the lines, words and characters in a given text

/* Write a C program to count the lines, words and characters in a given text*/

Program
#include <stdio.h>
main()
{
char line[81], ctr;
int i,c,
end = 0,
characters = 0,
words = 0,
lines = 0;
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Write a C program that uses functions to perform the following operations: To delete n Characters from a given position in a given string.

/* Write a C program that uses functions to perform the following operations:
  To delete n Characters from a given position in a given string.
*/

#include <stdio.h>
#include <conio.h>
#include <string.h>

void delchar(char *x,int a, int b);

void main()
{
    char string[10];
    int n,pos,p;
    clrscr();

    puts("Enter the string");
    gets(string);
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Write a C program to determine if the given string is a palindrome or not

/* Write a C program to determine if the given string is a palindrome or not */

#include<stdio.h>
#include<string.h>

enum Boolean{false,true};
enum Boolean IsPalindrome(char string[])
{
int left,right,len=strlen(string);
enum Boolean matched=true;
if(len==0)
 return 0;
 left=0;
 right=len-1;
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