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/* round vs floor vs ceil vs trunc */
#include <stdio.h> /* printf */
#include <math.h> /* round, floor, ceil, trunc */
int main ()
{
const char * format = "%.1f \t%.1f \t%.1f \t%.1f \t%.1f\n";
printf ("value\tround\tfloor\tceil\ttrunc\n");
printf ("-----\t-----\t-----\t----\t-----\n");
printf (format, 2.3,round( 2.3),floor( 2.3),ceil( 2.3),trunc( 2.3));
printf (format, 3.8,round( 3.8),floor( 3.8),ceil( 3.8),trunc( 3.8));
printf (format, 5.5,round( 5.5),floor( 5.5),ceil( 5.5),trunc( 5.5));
printf (format,-2.3,round(-2.3),floor(-2.3),ceil(-2.3),trunc(-2.3));
printf (format,-3.8,round(-3.8),floor(-3.8),ceil(-3.8),trunc(-3.8));
printf (format,-5.5,round(-5.5),floor(-5.5),ceil(-5.5),trunc(-5.5));
return 0;
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