c语言问题求大神指导！！

Question

#include"stdio.h"
#include"stdlib.h"
void main()
{
int problem,guess=1,a;
char ch;
problem=(int)(rand()%899+1);
scanf("%f%d",&ch,&guess);
for(a=0;ch!='n';a++)
for(a=0;guess==problem;a++)
{if(guess>problem)
printf("too high");
if(guess<problem)
printf("too low");
scanf("%d",&guess);
}
printf("%d",problem);
scanf("%f",&ch);
}为什么运行不起来 scanf("%f%d",&ch,&guess);只输入完这个语句够，界面就不动了

Answer 1

帮你改了一下，大概你要的是这种效果吧。

 #include"stdio.h"
 #include"stdlib.h"
int main()
 {
 int problem,guess=1;
 char ch;
 problem=(int)(rand()%899+1);
 scanf("%c%d",&ch,&guess);
 for(;ch!='n';){
 for(;guess!=problem;)
 {if(guess>problem)
 printf("too high\n");
 if(guess<problem)
 printf("too low\n");
 scanf("%d",&guess);
 }
 printf("You are right!The number is %d\n",problem);
 scanf("%c",&ch);
 }
 return 0;
 }