#include <stdio.h>
int main(){
float num1,num2,num3;
scanf("%f %f %f", &num1
, &num2
, &num3
); if ((num1 >= num2) && (num1 >= num3)){
printf("%.2f is the greatest number.\n", num1
); }else if((num2 >= num1) && (num2 >= num3)){
printf("%.2f is the greatest number.\n", num2
); }else{
printf("%.2f is the greatest number.\n", num3
); }
return 0;
}
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