# C Decimal Precision

## Set Decimal Precision

You have probably already noticed that if you print a floating point number, the output will show many digits after the decimal point:

### Example

float myFloatNum = 3.5;
double myDoubleNum = 19.99;

printf("%f\n", myFloatNum); // Outputs 3.500000
printf("%lf", myDoubleNum); // Outputs 19.990000
Try it Yourself »

If you want to remove the extra zeros (set decimal precision), you can use a dot (`.`) followed by a number that specifies how many digits that should be shown after the decimal point:

### 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 »

## Exercise:

Make the output of the following example to only show one digit after the decimal point:

```float myScore = 9.5;
printf("", myScore);
```

Start the Exercise

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