.2 is reserved for two decimal places, and 7 means the width is 7.
The code example is as follows:
# include & ltstdio.h & gt
int main()
{
Floating point number a = 5.1523;
printf("%7.2f\n "，a)；
Returns 0;
}
Extended data:
There are no input and output statements in standard C language, but input and output functions in standard library can be called to realize input and output. The basic syntax structure of output format control is as follows:
Printf (format control, output item 1, output item 2, ...)
Where the format control is in the form of a string. The format usually includes: "%",followed by the format descriptor.
Character output
When characters are to be output to an output device (display screen, printer, etc.). ), which can be controlled by C format descriptors. The code shown below is the output character ch (a):
char ch = ' a
printf("Character: %c \n "，ch)；