不知道问题出在哪了？
新手入门看的是 c Primer Plus在书中有个例题我编译了运行是这个样子不知道是怎么回事
#include<stdio.h>
const int S_PER_M=60;
const int S_PER_H=3600;
const double M_PER_K=0.62137;
int main(void)
{
double distk,distm;
double rate;
int min,sec;
int time;
double mtime;
int mmin,msec;
printf("This program converts your time for a metric race\n");
printf("to a time for running a mile and to your average\n");
printf("speed in miles per hour.\n");
printf("Please enter,in kilometers,the distance run.\n");
scanf("%1f",&distk);
printf("Next enter the time in minutes and seconds.\n");
printf("Begin by entering the minutes.\n");
scanf("%d",&min);
printf("Now enter the seconds.\n");
scanf("%d",&sec);
time = S_PER_M*min+sec;
distm = M_PER_K * distk;
rate = distm/time * S_PER_H;
mtime = (double)time/distm;
mmin = (int)mtime / S_PER_M;
msec = (int)mtime % S_PER_M;
printf("You ran %1.2f km (%1.2f miles) in %d min,%d sec.\n",distk,distm,min,sec);
printf("that pace corresponds to running a mile in %d min,",mmin);
printf("%d sec.\nyour average speed was %1.2f mph.\n",msec,rate);
return 0;
}
然后输入10.0 36 23结果是这个样子的不知道是什么回事
