This C Program uses recursive function & searches for an element in an unsorted list and display it’s position of occurrence. The user enters the element needed to be searched.
Here is the source code of the C program to search for an element in an unsorted list. The C Program is successfully compiled and run on a Linux system. The program output is also shown below.
/** C Program to search for an element in a list using*/#include <stdio.h>int search(int [], int, int);
int main()
{int size, index, key;
int list[20];
int count = 0;
int i;
printf("Enter the size of the list: ");
scanf("%d", &size);
index = size;
printf("Printing the list:\n");
for (i = 0; i < size; i++)
{list[i] = rand() % size;
printf("%d\t", list[i]);
}printf("\nEnter the key to search: ");
scanf("%d", &key);
while (index > 0)
{index = search(list, index - 1, key);
/* In an array first position is indexed by 0 */printf("Key found at position: %d\n", index + 1);
count++;}if (!count)
printf("Key not found.\n");
return 0;
}int search(int array[], int size, int key)
{int location;
if (array[size] == key)
{return size;
}else if (size == -1)
{return -1;
}else{return (location = search(array, size - 1, key));
}}
$ cc search $ a.out Enter the size of the list: 10 Printing the list: 3 6 7 5 3 5 6 2 9 1 Enter the key to search: 5 Key found at position: 6 Key found at position: 4
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If you wish to look at other example programs on Searching and Sorting, go to C Programming Examples on Searching and Sorting. If you wish to look at programming examples on all topics, go to C Programming Examples.
