The Function Printf ()() in C

This guide covers the function printf ()() in c with practical context and easy-to-follow details. Use it to understand the subject and apply the information confidently.

Declare the Printf ()() Function in C

Here is the declaration for the printf () function in the C programming language:

 int printf (const char * format, .) 

The Parameter Printf ()() in C

Format: This is the string containing the text written to stdout. It may contain formatting tags that can be embedded that are replaced by values defined in subsequent additional parameters and formatted as required. Prototype tags of the format % [flags] [width] [. Precision] [length] specifier , explained as follows:

Character specifier Character d or i Decimal integer with the sign e Scientific symbol (mantissa / exponent) uses the character e E Scientific notation (mantissa / exponent) using characters E f Actual floating point number Decimal g Short use of% e or% f G Compact use of% E or% fo Octal number signed s Character string u Unsigned decimal number x Hexadecimal integers mark X Unsigned hexadecimal integers (uppercase letters) p Pointer address n Do not print anything% characters

Additional parameters - Depending on the format format string, this function may have an additional parameter array, each containing a value to be inserted instead of each% -tag specified in the format parameter, if. This number of parameters should be the same number as% -tags that expect a value.

Return value:

If successful, the total number of characters recorded will be returned. If it fails, return a negative number.

For example:

The following program C illustrates the usage of the printf () function in C:

 #include 

 int main () 
 { 
 int ch; 

 for (ch = 75; ch <= 100; ch ++) 
 { 
 printf ("Gia tri ASCII =% d, Ky tu =% cn", ch, ch); 
 } 

 return (0); 
 } 

Compiling and running the above C program will result:

 Family ASCII = 75, Ky tu = K 
 Family ASCII = 76, Ky tu = L 
 Family ASCII = 77, Ky tu = M 
 Family ASCII = 78, Ky tu = N 
 Blessed ASCII = 79, Ky tu = O 
 Family ASCII = 80, Ky tu = P 
 Family ASCII = 81, Kyu = Q 
 Family ASCII = 82, Ky tu = R 
 Family ASCII = 83, Ky tu = S 
 ASCII = 84, Ky tu = T 
 Family ASCII = 85, Ky tu = U 
 Blessed ASCII = 86, Ky tu = V 
 Family ASCII = 87, Ky tu = W 
 Family ASCII = 88, Kyu = X 
 Family ASCII = 89, Kyu = Y 
 Blessed ASCII = 90, Ky tu = Z 
 Family ASCII = 91, Ky tu = [ 
 Family ASCII = 92, Ky tu = 
 Blessed ASCII = 93, Ky tu =] 
 Blessed ASCII = 94, Ky tu = ^ 
 Family ASCII = 95, Ky tu = _ 
 Family ASCII = 96, Ky tu = ` 
 Family ASCII = 97, Kyu = a 
 Blessed ASCII = 98, Kyu = b 
 Family ASCII = 99, Ky tu = c 
 Family ASCII = 100, Ky tu = d