We have already known what formatted input output is for integer data. Now we will see about the formatted input output for floating point numeric data. Let’s get started …
Format for floating point numeric input
%wf
Here ‘w’ is the integer number specifying the total width of the input data (including the digits before and after the decimal and the decimal itself).
For example
scanf(“%3f%4f”,&x,&y);
- When input data length is less than the given width, values are unaltered and stored in the variables.
Input-
6 6.9
Result-
6.0 is stored in x and 6.90 is stored in y.
- When input data length is equal to the given width, then the given values are unaltered and stored in the given variables.
Input-
6.4 6.03
Result-
6.4 is stored in x and 6.03 is stored in y.
- When input data length is more than the given width, then the given values are altered and stored in the given variables as-
Input-
6.04 76.98
Result
6.0 is stored in x and 4.00 is stored in y.
C program to demonstrate above example is
#include<stdio.h>
#include<conio.h>
int main(){
float a,b,c,d,e,f;
printf("Enter six fooating point numeric value (a,b,c,d,e,f) :\n");
scanf("%3f%4f%3f%4f%3f%4f",&a,&b,&c,&d,&e,&f); //reading integer data in particular format
printf("Stored floating point numeric values for variables are\na = %f\nb = %f\nc = %f\nd = %f\ne = %f\nf = %f\n",a,b,c,d,e,f);
getch();
return 0;
}
Its output will be as:
Format for floating point numeric output
%w.nf
Here w is the integer number specifying the total width of the input data and n is the number of digits to be printed after the decimal point. By default 6 digits are printed after the decimal.
For example-
printf(“x=%4.1f,y=%7.2f”,x,y);
Value of variables-
9 6.9
Output:
| x | = | 9 | . | 0 | , | y | = | 6 | . | 9 | 0 |
Value of variables-
36.4 2746.03
Output
| x | = | 3 | 6 | . | 4 | , | y | = | 2 | 7 | 4 | 6 | . | 0 | 3 |
Value of variables-
26.342 76.985948
Output:
| x | = | 2 | 6 | . | 3 | , | y | = | 7 | 6 | . | 9 | 9 |
C program to demonstrate above example is:
#include<stdio.h>
#include<conio.h>
int main(){
float a=9,b=6.9,c=36.4,d=2746.03,e=26.342,f=76.985948;
printf("Printed floating point numeric values for variables with format specifications are\na = %4.1f\nb = %7.2f\nc = %4.1f\nd = %7.2f\ne = %4.1f\nf = %7.2f\n",a,b,c,d,e,f);
getch();
return 0;
}
Its output will be as:
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