C Tutorial/Data Type/float Calculation
Division with float values
<source lang="cpp">#include <stdio.h> int main(void) {
float plank_length = 10.0f;
float piece_count = 4.0f;
float piece_length = 0.0f;
piece_length = plank_length/piece_count;
printf("A plank %f feet long can be cut into %f pieces %f feet long.",
plank_length, piece_count, piece_length);
return 0;
}</source>
A plank 10.000000 feet long can be cut into 4.000000 pieces 2.500000 feet long.
Do a calculation on float number
<source lang="cpp">#include <stdio.h>
- include <stdlib.h>
int main() {
float height_in_cm;
char height_in_inches[4];
printf("Enter your height in inches:");
gets(height_in_inches);
height_in_cm = atoi(height_in_inches) * 2.54;
printf("You are %.2f centimeters tall.\n",height_in_cm);
return(0);
}</source>
Enter your height in inches:1
You are 2.54 centimeters tall.
Read float number and do a calculation
<source lang="cpp">#include <stdio.h> int main(void) {
float radius = 0.0f;
float diameter = 0.0f;
float circumference = 0.0f;
float area = 0.0f;
float Pi = 3.14159265f;
printf("Input the diameter of the table:");
scanf("%f", &diameter);
radius = diameter/2.0f;
circumference = 2.0f*Pi*radius;
area = Pi*radius*radius;
printf("\nThe circumference is %.2f", circumference);
printf("\nThe area is %.2f\n", area);
return 0;
}</source>
Input the diameter of the table:123
The circumference is 386.42
The area is 11882.29
