Using precision while printing integers, floating-point numbers and strings using printf() C function

 

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows XP Pro SP2

Header file: Standard

Additional library: none/default

Additional project setting: Set project to be compiled as C

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C Code (/TC)

Other info: none

To do: Using precision while printing integers, floating-point numbers and strings using printf() C function

To show: How to use precision while printing integers, floating-point numbers and strings using printf() C function

 

 

// Using precision while printing integers, floating-point numbers and strings

#include <stdio.h>

 

int main(void)

{

int i = 873;

float f = 123.94536;

// Unsized array

char s[] = "Happy Birthday";

 

printf("Using precision while printing integers,\n");

printf(" floating-point numbers, and strings.\n");

printf("Compare the output with the source code\n");

printf("----------------------------------------\n\n");

printf("Using precision for integers\n");

printf("\t%.4d\n\t%.9d\n\n", i, i);

printf("Using precision for floating-point numbers\n");

printf("\t%.3f\n\t%.3e\n\t%.3g\n\n", f, f, f);

printf("Using precision for strings\n");

printf("\t%.11s\n", s);

 

return 0;

}

 

Output example:

 

Using precision while printing integers,

floating-point numbers, and strings.

Compare the output with the source code

----------------------------------------

Using precision for integers

0873

000000873

Using precision for floating-point numbers

123.945

1.239e+002

124

Using precision for strings

Happy Birth

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