algorithm - Percentage in C Language -


i need algorithm in language c this:

0   ..... 100% 255 ..... 0% 50  ..... x%

how find out how many x? know how this:

255 .... 100% 50  .... x%

and solve this:

x = (50*100)/255;

try this:

float percentage = 100.0 - (input*100/255);

the idea calculate percentage on range [0..255]. so, divide whatever number 255 , multiply 100. want invert input, 0 100% , 255 0%. that, subtract 100.


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