#include <stdio.h>
int main()
{
int array[100], position, c, n;
printf("Enter number of elements in array\n");
scanf("%d", &n);
printf("Enter %d elements\n", n);
for ( c = 0 ; c < n ; c++ )
scanf("%d", &array[c]);
printf("Enter the location where you wish to delete element\n");
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 is\n");
for( c = 0 ; c < n - 1 ; c++ )
printf("%d\n", array[c]);
}
return 0;
}
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Thursday 24 December 2015
Reverse an Array in C
C program to reverse an array: This program reverses the array elements. For example if a is an array of integers with three elements such that
a[0] = 1
a[1] = 2
a[2] = 3
Then on reversing the array will be
a[0] = 3
a[1] = 2
a[0] = 1
a[0] = 1
a[1] = 2
a[2] = 3
Then on reversing the array will be
a[0] = 3
a[1] = 2
a[0] = 1
#include <stdio.h>
int main()
{
int n, c, d, a[100], b[100];
printf("Enter the number of elements in array\n");
scanf("%d", &n);
printf("Enter the array elements\n");
for (c = 0; c < n ; c++)
scanf("%d", &a[c]);
for (c = n - 1, d = 0; c >= 0; c--, d++)
b[d] = a[c];
for (c = 0; c < n; c++)
a[c] = b[c];
printf("Reverse array is\n");
for (c = 0; c < n; c++)
printf("%d\n", a[c]);
return 0;
}
Binary Search in C
Assuming that the numbers are in ascending order :
#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 is not present in the list.\n", search);
return 0;
}
Linear Search in C programming
#include <stdio.h>
int main()
{
int array[100], search, c, n;
printf("Enter the 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 the number to search\n");
scanf("%d", &search);
for (c = 0; c < n; c++)
{
if (array[c] == search) /* if required element found */
{
printf("%d is present at location %d.\n", search, c+1);
break;
}
}
if (c == n)
printf("%d is not present in array.\n", search);
return 0;
}
Minimum Element in an Array
#include <stdio.h>
int main()
{
int array[100], minimum, size, c, location = 1;
printf("Enter the number of elements in array\n");
scanf("%d",&size);
printf("Enter %d integers\n", size);
for ( c = 0 ; c < size ; c++ )
scanf("%d", &array[c]);
minimum = array[0];
for ( c = 1 ; c < size ; c++ )
{
if ( array[c] < minimum )
{
minimum = array[c];
location = c+1;
}
}
printf("Minimum element is present at location %d and it's value is %d.\n", location, minimum);
return 0;
}
To Find Maximum Element in An Array
#include <stdio.h>
int main()
{
int array[100], maximum, size, c, location = 1;
printf("Enter the number of elements in array\n");
scanf("%d", &size);
printf("Enter %d integers\n", 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;
}
}
printf("Maximum element is present at location %d and it's value is %d.\n", location, maximum);
return 0;
}
Add Integers using Pointers in C
#include <stdio.h>
int main()
{
int first, second, *p, *q, sum;
printf("Enter two integers to add\n");
scanf("%d%d", &first, &second);
p = &first;
q = &second;
sum = *p + *q;
printf("Sum of entered numbers = %d\n",sum);
return 0;
}
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