Which is a formatted input function in ‘c’

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Electrical Ohm's Law Thevenin's Theorem. Interview C Interview Aptitude. Just like integer value, we can take input for any different datatype. Let's see an example for float type value. Try doing the same for taking a double type value as user input. The printf function returns the number of characters printed by it, and scanf returns the number of characters read by it.

In this program printf "studytonight" ; will return 12 as result, which will be stored in the variable i , because the word studytonight has 12 characters. The first printf statement will print the statement studytonight on the output too.

The getchar function reads a character from the terminal and returns it as an integer. This function reads only a single character at a time. You can use this method in a loop in case you want to read more than one character. The putchar function displays the character passed to it on the screen and returns the same character. This function too displays only a single character at a time.

In case you want to display more than one character, use putchar method in a loop. When you will compile the above code, it will ask you to enter a value. When you will enter the value, it will display the value you have entered. The gets function reads a line from stdin standard input into the buffer pointed to by str pointer , until either a terminating newline or EOF end of file occurs.

The puts function writes the string str and a trailing newline to stdout. Ignore if you are not able to understand this now. When you will compile the above code, it will ask you to enter a string.

When you will enter the string, it will display the value you have entered. The main difference between these two functions is that scanf stops reading characters when it encounters a space , but gets reads space as a character too.

If you enter a name as Study Tonight using scanf it will only read and store Study and will leave the part after space.