[C] about set of input test cases

[cache_sof]

um.. i dunno how to say and i dunno what keywords should be typed to search in this forum or in Google.
My question is, for example my program just take an input and output its square.

/* main.h */
#include <stdio.h>
int main()
{
	int a,i;
	for(i=0; i<10; i++){
		scanf("%d", &a);
		a *= a;
		printf("%d\n", a);
	}
  return 0;
}

how can i, let say, input 1000 cases to test the program?
um.. like the SPOJ, how can it pass many input to it?
and how you guys test your program with large number of inputs without method like reading in a textfile?

Thanks,
and i felt sorry for my bad English.

[leppyr64]

Redirect stdio.

G++ test.cpp test.exe 
Test <test.in >test.out

[cache_sof]

[quote="leppy"]Redirect stdio.

G++ test.cpp test.exe 
Test <test.in >test.out

[/quote]

thank you so much, finally got the answer
thank you

[spongebob_sof]

my problem is about set of input test cases too.
i read the reply that leppy wrote it but i didn't understand!
i am a novice programmer !
can you explain me the reply in a example?

[leppyr64]

The first line is due compiling the c file test.cpp. The second line executes test, using test.in for the input and test.out for the output.

Scanf and cin will read from the items in test.in and printf and cout will write to test.out.

[iit2011101]

can u explain with example... not understanding... these commands r not wrking ...

[leppyr64]

This assumes that you are using the gcc library for c, but specifically g++. If you are using c and not c++ then change g++ to gcc. If you are not using gcc, I suggest you do, as that is the same compiler that spoj uses.