Write a program in C to copy a file in another name

Write a program in C to append multiple lines at the end of a text file.

Write a program in C to get the largest element of an array using the function

Write a program in C to check whether a number is a prime number or not using the function

Write a program in C to convert decimal number to binary number using the function

Write a C program to find sum of n elements entered by user. To perform this program, allocate memory dynamically using calloc( ) function. Understand the difference between the above two programs

Solution: Like malloc, calloc also allocates memory at runtime and is defined in stdlib.h. It takes the number of elements and the size of each element(in bytes), initializes each element to zero and then returns …

Write a C program to find sum of n elements entered by user. To perform this program, allocate memory dynamically using malloc() function.

Solution: In this program, we used malloc() function to allocate the memory. After memory allocation, we read the elements into array using for loop with expression “p+i”. Using pointer variable “p” and it’s increment, we …

Write a program in C to show how a function returning pointer

Solution: In this program, we define a function add() that returns the address of variable ‘z’. ‘z’ holds the value which is sum of 2 input number x and y. To collect the address returned …

Write a program in C to count the number of vowels and consonants in a string using a pointer

Write a program in C to swap elements using call by reference

Solution: Swapping is the concept of interchanging the values of 2 numbers. We use call by reference concept to swap 2 numbers in this code. Read elements into variables a and b in main() function …