How to Set Float Precision in the C language

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:

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

OUTPUT

3.500000

3.5

3.50

3.5000

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