C programming Archives - Page 5 of 46

C program to append data into a file

C programming January 15, 2023February 2, 2018

Quick links

How to append
Example program

Write a C program to read data from user and append data into a file. How to append data at end of a file in C programming. In this post I will explain append mode in file handling. I will cover how to append data into a file in C using append file mode.

Example

Source file content

I love programming.
Programming with files is fun.

String to append

Learning C programming at Codeforwin is simple and easy.

Output file content after append

I love programming.
Programming with files is fun.
Learning C programming at Codeforwin is simple and easy.

C program to write even, odd and prime numbers to separate file

C programming January 15, 2023January 29, 2018

Write a C program to input numbers from a file and write even, odd and prime numbers to separate files. How to input numbers from file using fscanf() and write even, odd and prime numbers to different file.

C program to read a file and display its contents

C programming January 15, 2023January 22, 2018

Quick links

How to read?
fgetc()
fgetc() example
fgets()
fgets() example

Write a C program to read a file and display its contents on console. How to read a file and display file contents on console in C programming. In this exercises, I will explain you how to read a file character by character using fgetc(). How to read a file line by line using fgets().

C program to create a file and write data into file

C programming January 15, 2023January 20, 2018

Quick links

How to create file?
Example program

Write a C program to create a file and write contents in it. How to create a file in C programming? C program to input a string from user and store it in a text file. Learn how to create a file and write contents to it in C programming.

atoll() in C – Syntax, Use and Example

C programming January 15, 2023January 13, 2018

Quick links

atoll() function
Syntax
Example program

Write a C program to input string from user and convert string to long long using atoll() library function. How to convert string to long long int type using atoll() library function in C programming?

strtoull() in C – Syntax, Use and Example

C programming January 15, 2023January 13, 2018

Quick links

strtoull() function
Syntax
Example program

Write a C program to input string from user and convert string to unsigned long long using strtoull() library function. How to convert string to unsigned long long int using strtoull() library function in C programming?

strtoll() in C – Syntax, Use and Example

C programming January 15, 2023January 13, 2018

Quick links

strtoll() function
Syntax
Example program

Write a C program to input string from user and convert string to long long using strtoll() library function. How to convert string to long long int using strtoll() library function in C programming?

strtoul() in C – Syntax, Use and Example

C programming January 15, 2023January 11, 2018

Quick links

strtoul() function
Syntax
Example program

Write a C program to input string representation of integer and convert string to unsigned long using strtoul() library function. How to convert string to unsigned long int using strtoul() library function in C programming?

strtol() in C – Syntax, Use and Example

C programming January 15, 2023January 8, 2018

Quick links

strtol() function
Syntax
Example program

Write a C program to input string representation of integer and convert string to long using strtol() library function. How to convert string to long using strtol() library function in C programming?

atof() in C – Syntax, Use and Example

C programming January 15, 2023January 7, 2018

Quick links

atof() function
Syntax
Example program

Write a C program to input string representation of number and convert string to double using atof() library function. How to convert string to double using atof() library function in C programming?