c language Archives - Page 3 of 7

File Operations in C

March 3, 2022October 28, 2021 by Codingtube team

There are different operations that can be carried out on a file operations in C These are: Creation of a new file Opening an existing file Reading from a file Writing to a file Moving to a specific location in a file (seeking) Closing a file Let us now write a program to read a … Read more

Data Organization in C

October 28, 2021 by Codingtube team

All data stored on the disk is in binary form. How this binary data is stored on the disk varies from one OS to another. However, this does not affect the C programmer since he has to use only the library functions written for the particular OS to be able to perform input/output. It is … Read more

Structure in C

October 28, 2021 by Codingtube team

A structure contains a number of data types grouped together. These data types may or may not be of the same type Uses of Structures in C Where are structures useful? The immediate application that comes to the mind is Database Management. That is, to maintain data about employees in an organization, books in a … Read more

strcmp( ) function in c

October 28, 2021 by Codingtube team

strcmp function in c which compares two strings to find out whether they are same or different. The two strings are compared character by character until there is a mismatch or end of one of the strings is reached, whichever occurs first. If the two strings are identical, strcmp( ) returns a value zero. If … Read more

strcat( ) in c

October 28, 2021 by Codingtube team

strcat() function in C concatenates the source string at the end of the target string Example of strcat() in C Output source string = Folks!target string = HelloFolks!

strcpy( ) function in C

October 28, 2021 by Codingtube team

strcpy( ) function in C copies the contents of one string into another. The base addresses of the source and target strings should be supplied to this function Example of strcpy() function And here is the output… source string = Sayonaratarget string = Sayonara

strlen( ) in C

October 28, 2021 by Codingtube team

strlen() function in c counts the number of characters present in a string Example of strlen() function The output would be… string = Bamboozled length = 10string = Humpty Dumpty length = 13

Standard Library String Functions in C

November 2, 2021October 27, 2021 by Codingtube team

List of all Standard Library String Functions Function Use strlen Finds length of a string strlwr Converts a string to lowercase strupr Converts a string to uppercase strcat Appends one string at the end of another strncat Appends first n characters of a string at the end ofanother strcpy Copies a string into another strncpy … Read more

Pointers and Strings in C

October 27, 2021 by Codingtube team

Suppose we wish to store “Hello”. We may either store it in a string or we may ask the C compiler to store it at some location in memory and assign the address of the string in a char pointer. char str[ ] = “Hello” ;char *p = “Hello” ; There is a subtle difference … Read more

gets and puts in c

October 27, 2021 by Codingtube team

scanf( ) is not capable of receiving multi-word strings. Therefore names such as ‘Debashish Roy’ would be unacceptable. The way to get around this limitation is by using the function gets( ). The usage of functions gets( ) and its counterpart puts( ) main( ){char name[25] ;printf ( “Enter your full name ” ) ;gets … Read more