The printf() is a library function to send formatted output to the screen. The function prints the string inside quotations. To use printf() in our program, we need to include stdio.h header file using the #include <stdio.h> statement.
The printf() function is used for printing the output. It returns the number of characters that are printed. If there is some error then it returns a negative value.
The print() function prints the specified message to the screen, or other standard output device. The message can be a string, or any other object, the object will be converted into a string before written to the screen.
First thing to note is that return and print are statements, not functions, but that is just semantics. I'll start with a basic explanation. print just shows the human user a string representing what is going on inside the computer. The computer cannot make use of that printing.
The printf() function sends a formatted string to the standard output (the display). This string can display formatted variables and special control characters, such as new lines ('\n'), backspaces ('\b') and tabspaces ('\t'); these are listed in Table 2.1. Table 2.1. Special control (or escape sequence) characters.
In C programming language, %d and %i are format specifiers as where %d specifies the type of variable as decimal and %i specifies the type as integer. In usage terms, there is no difference in printf() function output while printing a number using %d or %i but using scanf the difference occurs.
You can put one or more print statements inside the function definition and not bother to return anything from the function (the value None will be returned). In that case, invoke the function without a print statement. For example, you can have an entire line of code that reads f(3) .
The print() function accepts an object as a parameter, such as a string, a number, or a list. It is then converted to a string through an implicit call of the built-in str() function and the value is printed to an output stream.
The print() function writes, i.e., "prints", a string or a number on the console. The return statement does not print out the value it returns when the function is called.
Without using the separate pointer for print the address of the function, You can use the name of the function in the printf . printf("The address of the function is =%p\n",test); For printing the address in the hexa-decimal format you can use the %p .
print function displays the given message on the screen. For example. print ("Hello") gives output as Hello Whereas input function accepts given data. For example, input = "Enter your age :" shows output as Enter your age and when you enter your age and press enter it takes in your age.
The input ( ) function helps to enter data at run time by the user and the output function print ( ) is used to display the result of the program on the screen after execution.
To return a value from a function, you must include a return statement, followed by the value to be returned, before the function's end statement. If you do not include a return statement or if you do not specify a value after the keyword return, the value returned by the function is unpredictable.
Printf() and Scanf() are inbuilt library functions in C language that perform formatted input and formatted output functions. These functions are defined and declared in stdio. h header file. The 'f' in printf and scanf stands for 'formatted'.
Function Calling:
It is only called by its name in the main() function of a program. We can pass the parameters to a function calling in the main() function. Syntax: Add(a, b) // a and b are the parameters.
The print function comes from the builtins module.
print(), round(), abs(), pow(), int(), float(), etc. are known as predefined functions.
The Function printf
printf is a C function that you may use in C++ to print from a program. Printf uses a somewhat similar structure to cout, but since it comes from C, the notable difference is that it requires a format specifier.
It is very important NOT to use fprintf in a function when the reason for using the function is to compute a value for the computer to use.
using printf()
If we want to do a string output in C stored in memory and we want to output it as it is, then we can use the printf() function. This function, like scanf() uses the access specifier %s to output strings. The complete syntax for this method is: printf("%s", char *s);
It does not return a value, which is the same as returning None. You won't find it explicitly in the documentation as functions returning None simply omit documenting the return value.
%ld. Long Integer Format Specifier. It is used when data type is of long int which stores a long integer value from range [−2,147,483,647, +2,147,483,647]. %lld. Long Long Integer Format Specifier.
%s is for string %d is for decimal (or int) %c is for character.
%d is used to print decimal(integer) number ,while %c is used to print character . If you try to print a character with %d format the computer will print the ASCII code of the character.