/* * file: main6.c * main C program that uses assembly routine in sub5.asm * to create executable: * DJGPP:   gcc -o sub5 main5.c sub5.o * Borland: bcc32 sub5.obj main5.c */#include <stdio.h>#include "cdecl.h"int PRE_CDECL calc_sum( int ) POST_CDECL;     /* prototype for assembly routine */int main( void ){  int n, sum;  printf("Sum integers up to: ");  scanf("%d", &n);  sum = calc_sum(n);  printf("Sum is %d\n", sum);  return 0;}