Question

错误 5-4.c 13: 语句缺少';'在 main 函数中 警告 5-4.c 19: 可能在'e'定义以前使用了它在 main 函数中

#include <stdio.h>
#include <math.h>
void main()
{
float a,b,c,d,e,f;
printf("please input three num \n a=");
scanf ("%f",&a);
printf("b=") ;
scanf ("%f",&b);
printf("c=");
scanf("%f",&c);
if (a<=b)
if (b<=c) d=a e=b f=c;
else if (a<=c) d=a e=c f=b;
else d=c e=a f=b;
else if (b>c) d=c e=b f=a;
else if (a>c) d=b e=c f=a;
else (d=b e=a f=c) ;
printf("%f %f %f",d,e,f);
getch();
}

Answer 1

if (b<=c) {d=a;e=b;f=c;}
else if (a<=c) {d=a ;e=c; f=b;}
else {d=c ;e=a ;f=b;}
else if (b>c){ d=c; e=b; f=a;}
else if (a>c) {d=b; e=c ;f=a;}
else {d=b ;e=a; f=c ;}

Answer 2

if (b<=c) d=a e=b f=c;
像这种都修改为
if (b<=c) {d=a;e=b;f=c;}

Answer 3

#include <stdio.h>
void main()
{
float a,b,c,d,e,f;
printf("please input three num \n a=");
scanf ("%f",&a);
printf("b=") ;
scanf ("%f",&b);
printf("c=");
scanf("%f",&c);
if (a<=b)
{
if (b<=c)
{ d=a; e=b; f=c;}
else if (a<=c)
{ d=a; e=c; f=b;}
else
{ d=c; e=a; f=b;}
}
else if (b>c){ d=c; e=b; f=a;}
else if (a>c){d=b; e=c; f=a;}
else{d=b; e=a; f=c;}
printf("%f %f %f",d,e,f);
getch();
}