可能我理解错了，是这样吗？
#include
#include
#define DICIMALIST 10
#define ROUNDING 1
int
main (int argc, char *argv[])
{
float key = .0F;
int munber = 0;
scanf("%f", &key);
munber = key/ROUNDING;
if((munber*DICIMALIST+5)<=10*key)
munber += 1;
printf("key=%.2f\tmunber=%d\n", key, munber);
return 0;
}
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