The form of a floating-point declaration : float Declaration « Data Type « C Tutorial

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C Tutorial » Data Type » float Declaration 
2. 18. 2. The form of a floating-point declaration
float   variable;   /* comment */

When using a floating-point number in printf, the %f conversion is used.

To print the expression 1.0/3.0, we use this statement:

#include<stdio.h>

int main(void){
    printf("The answer is %f\n"1.0/3.0);
}
The answer is 0.333333
2. 18. float Declaration
2. 18. 1. Floating Point variables
2. 18. 2. The form of a floating-point declaration
2. 18. 3. Define float variable and output to the console
2. 18. 4. Define float in In scientific notation (The E notation)
2. 18. 5. Define float constant value using Macro
2. 18. 6. Assignment of an integer expression to a floating-point variable.
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