In this article we will learn to implement a C program to reverse a given string. A C program is provided below to reverse a given string without using predefined function. Program is as follows: #include<stdio.h> #include<string.h> int main() { char str[20]; printf("Enter a string: "); scanf("%s", str); int length = strlen(str); for(int i=0, […]
In this article we will learn to implement a C program to compare two strings without using library function. A C program is provided below to compare two strings without using predefined function. Program is as follows: #include<stdio.h> #include<string.h> int main() { char str[20]; printf("Enter a string: "); scanf("%s", str); char newstr[20]; printf("Enter another string: […]
In this article we will learn to implement a C program to concatenate two strings without using library functions. A C program is provided below to join or concatenate two strings without using predefined function like strcat. Program is as follows: #include<stdio.h> #include<string.h> int main() { char str[20]; printf("Enter a string: "); scanf("%s", str); char […]
In this article we will learn to implement a C program to copy one string to another. A C program is provided below to copy one string to another without using predefined function strcpy. Program is as follows: #include<stdio.h> #include<string.h> int main() { char str[20]; printf("Enter a string: "); scanf("%s", str); char newstr[20]; int i=0; […]
In this article we will learn to implement a C program to find the length of a string without using strlen. A C program is provided below to find length of a string without using predefined function. Program is as follows: #include<stdio.h> int main() { char str[20]; printf("Enter a string: "); scanf("%s", str); int […]
In this article we will learn to implement a C program to reverse an array in place using pointers. A C program is provided below to reverse the given array in place using pointers. Program is as follows: #include<stdio.h> void reversearray(int *p, int n) { int *first = p; int *last = p+n-1; while(first<last) { […]
In this article we will learn to implement a C program to reverse an array in place (without using a temporary array. A C program is provided below to reverse an array in place. Program is as follows: #include<stdio.h> int main() { int array[20]; int n; printf("Enter number of elements: "); scanf("%d", &n); printf("Enter array […]
In this article we will learn to implement a C program for strong number. A C program is provided below to check whether the given number is strong number or not. Examples of strong numbers: 1, 2, 145, etc. Program is as follows: Subscribe to our monthly newsletter. Get notified about latest articles, […]
In this article we will learn to implement a C program for perfect number. A C program is provided below to check whether the given number is a perfect number or not. Examples of perfect numbers are: 6, 28, 496, etc. Program is as follows: Subscribe to our monthly newsletter. Get notified about […]
This is a C program to print prime numbers using Sieve of Eratosthenes, which is said to be the most efficient algorithm for generating prime numbers. The program is as follows: #include<stdio.h> int main() { int n; printf("Enter n value: "); scanf("%d", &n); int prime[n+1]; //Loading the array with numbers from 1 to n […]