the small program dosen't execute

[aravind12345]

the problem is that the program dosen't execute and there are no errors and warnings. ( look at this link and you will
know what i mean http://www.youtube.com/watch?v=lialD...ature=youtu.be ) please help me

#include<stdio.h>
#include<conio.h>
void main()
{
float s=0,t=0,d=0;
printf("please enter a distence in kliometers");
scanf("%f",d);
printf("now enter the time taken in hours to travle that distence entered before");
scanf("%f",t);
s = d/t;
printf("the speed is %f",s);
getch();
clrscr();
}

[Banfa]

main returns int, pretty much always. At best returning void is a compiler extension and not portable. Get out of the habit of using conio.h it is not a standard header and most modern systems do not have it.

Correcting the return value of main (and adding a return statement) and removing lines 2, 12 and 13 all of which are not required for your program to function I get the following 2 warnings (line numbers corrected to match your posted source)

test.c:7:1: warning: format '%f' expects type 'float *', but argument 2 has type 'double'

test.c:9:1: warning: format '%f' expects type 'float *', but argument 2 has type 'double'

Which hi-lights your error, you have missed the & off the parameters in scanf so instead of pointers you are passing uninitialised double (note that it is double due to the automatic promotion rules for undefined parameters in C) values and scanf then treats them as pointers and writes to some random place in memory causes (for me) a crash.