#include "Stdio.h"#include "Conio.h"int main(void){ int i,A,B,C,D,j,k,l;float X; int a[100]={20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,42,44,45,47,48,50,54,55,58,60,63,64,65,66,70,72,74,75,80,85,88,90,95,96,98,99,100,104,105,108,110,114,115,120,123,124,125,126,127,135,138,144,132,128,130,136,140,145}; printf("input a number:"); scanf("%f",&X); for(i=0;i<68;i++) for(j=0;j<68;j++) for(k=0;k<68;k++) for(l=0;l<68;l++) if((a[i]/a[j])*(a[k]/a[l])*12.7==X) printf("%d %d %d %d",a[i],a[j],a[k],a[l]); getch(); return 0;}
