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27 sie 2009 · #define ROUNDF(f, c) (((float)((int)((f) * (c))) / (c))) Here is an example: float x = ROUNDF(3.141592, 100) x equals 3.14 :)
21 maj 2024 · Rounding Floating Point Number To two Decimal Places in C and C++. Last Updated : 21 May, 2024. How to round off a floating point value to two places. For example, 5.567 should become 5.57 and 5.534 should become 5.53. First Method:- Using Float precision.
Example. float myFloatNum = 3.5; printf ("%f\n", myFloatNum); // Default will show 6 digits after the decimal point. printf ("%.1f\n", myFloatNum); // Only show 1 digit. printf ("%.2f\n", myFloatNum); // Only show 2 digits. printf ("%.4f", myFloatNum); // Only show 4 digits. Try it Yourself ».
28 mar 2023 · Below are some of the frequently asked questions about float in c. Q1: What is the purpose of using float in C? A1: Float in C is used to represent real numbers with decimal points.
Understanding how to print float values in C is an essential skill for any programmer. In this guide, we will explore the basics of printing float values in C, including formatting options and handling special cases.
The %g specifier automatically chooses between the decimal and scientific notation based on the magnitude of the float. Here’s an example of using the printf function to print a float with a precision of 2 decimal places: #include <stdio.h> int main() { float pi = 3.14159; printf("Pi: %.2f\n", pi); return 0; } This will output: Pi: 3.14
Did you read the link on printf formatting supplied above? It means that you want 2 digits and 0 decimals. You could for example use "%8.3f", and you would use 8 positions for the whole number [or more if it's a bigger number than can fit in that space], and out of those 3 would be decimal places. --Mats
