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Formatted output converts the internal binary representation of the data to ASCII characters which are written to the output file. Formatted input reads characters from the input file and converts them to internal form. Formatted I/O can be either "Free" format or "Explicit" format, as described below.

In C programming language, printf() function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen. We use printf() function with %d format specifier to display the value of an integer variable.

In C, printf() returns the number of characters successfully written on the output and scanf() returns number of items successfully read. Irrespective of the string user enters, below program prints 1. Actually, you can use printf() to output a function's return value. ... The return value is 0.

If you want to output the result of a formatted string, you would have to use snprintf first, printing it to an array, which in turn you can use to print as a string then. What printf does is just push characters to the buffered output stream. ... This statement is not correct but, you can use printf within printf.

The functioning part of the printf resides within the header file conio.h and stdio.h . SCANF: scanf is used to take an input from the keyboard when typed by the user. It's functioning is also resides in the header files mentioned above. What is the difference between printf(), cout, cin, and scanf()?

To print is to produce output for the user to read, whereas to scan is to read input from the command line that the user types in. The f at the end stands for "formatted". So both printf and scanf functions use codes within a format string to specify how output or input values should be formatted.

The scanf() function is used for obtaining the input from the user. It returns the number of input values that are scanned. If there is some input failure or error then it returns EOF (end-of-file).

%d is used to format the output in C programming language. If we want to print an integer, we use %d. It is called a format specifier.

For example If we want to read and print integer using scanf() and printf() function, either %i or %d is used but there is subtle difference in both %i and %d format specifier. %d specifies signed decimal integer while %i specifies integer. There is no difference between the %i and %d format specifiers for printf.

%d means an integer. : is a : %02d means an integer, left padded with zeros up to 2 digits.

%f in c programming means float used to represent format specifier for floating values it can give precision upto 6 digits. %f (print as a floating point)

%s is used as a placeholder for string values you want to inject into a formatted string. %d is used as a placeholder for numeric or decimal values. This line of code will substitute %s with Alice (str) and %d with 42. The %d and %s string formatting "commands" are used to format strings.

Printf creates an internal buffer for constructing output string. Now printf iterates through each characters of user string and copies the character to the output string. Printf only stops at "%". "%" means there is an argument to convert.

In C programming language, printf() function is used to print the character, string, float, integer, octal and hexadecimal values onto the output screen. We use printf() function with %d format specifier to display the value of an integer variable. ... To generate a newline,we use \\n in C printf() statement.

Scanf. The scanf function allows you to accept input from standard in, which for us is generally the keyboard. ... scanf("%d", &b); The program will read in an integer value that the user enters on the keyboard (%d is for integers, as is printf, so b must be declared as an int) and place that value into b.