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  1. #include "stdio.h"
  2. #include "stdlib.h"
  3. #include "math.h"
  4. struct c_comp{
  5.         double rmz;
  6.         double imz;
  7. }c_comp;
  8. int c_comp_product(a1,a2,c)
  9. struct c_comp *a1,*a2,*c;
  10. {
  11.         double p,q,s;
  12.         if(a1 == NULL || a2 == NULL || c == NULL)
  13.         {
  14.                 printf("(c_comp_product)The c_comp pointer is NULL!\n");
  15.                 return(0);
  16.         }
  17.         p = a1->rmz*a2->rmz;
  18.         q = a1->imz*a2->imz;
  19.         s = (a1->rmz + a1->imz)*(a2->rmz + a2->imz);
  20.         c->rmz = p - q;
  21.         c->imz = s - p - q;
  22.         return(1);
  23. }   
  24.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
/usr/lib/gcc/i486-linux-gnu/4.7/../../../i386-linux-gnu/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout 
Standard output is empty
https://ideone.com/T00K5U
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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