Hi friends,

As i a writting small C program to pass the structure pointer in the function. i am endup with small problem, plz let me know how to crack this one?

void function1(void *);
void main()
 int size_offset = 0;
 typedef struct 
  int a;
  int b;
  int c;
  char ch;
 A *pst = NULL;
 pst = (A*)malloc(sizeof(A)*1);
void function1(void *pStr)
   // As i need to intialize the structure members. i want to access it's me
   // How can i know the structure's 
   // memory layout in this function? 
   //1. i do not want to declare the structure as global or static.
   //2. I will pass the structure pointer as void pointer.

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Given your restrictions on what you can do, nothing can be done to fix your code.

Your type A, can it be outside of the main function? Still your pst struct is local beside that.
NOTE: Instead of void main use int main.

void function1(void *pStr)
   A * ptmp = (A *) pStr;
   ptmp->a = 0;
   ptmp->b = 0;
   ptmp->c = 0;
   ptmp->ch = '\0';

if type A is in front of int main.

>>pst = (A*)malloc(sizeof(A)*1);

1. The "*1" is unnecessary and spurious.
2. C programs do not require typecasting. So remove that typecast. If your compiler complains then your are apparently writing a c++ program.

3. Move that structure above the functuion main() so that it is visible to all other functions. Then change function1 parameter to use that structure instead of passing a void pointer. You will need to change the function prototype at the top of your program too.

void function1(A *pStr)
  // blabla

4. Come up with a better naming convention than "A". That is a sure sign of poor programming habits. You are new at this, so learn the right way at the very start.



 float sales;
 float sal;

 printf("Enter sales in dollars (-1 to end):");


	printf("salary is %.2f\n");

	printf("\n\nEnter sales in dollars (-1 to end):");
commented: Thanks, but no thanks -1
commented: Bad code, poorly posted, no explanation. Worthless. +11

If your machine is 32-bit hardware.Then ,

If the void* points to the memory location 0x00000100h then ,
&a = 0x00000100h
&b = 0x00000104h
&c = 0x00000108h
&ch = 0x000010Ch

and when you initializing like this way , you should be ready to handle
memory exceptions otherwise this code is not robust.

Using a while loop write a program that asks the user to enter a sequence of characters ending with ! and counts and outputs the number of occurrences of each of the vowels (a,o,u,i,e) only if they exist in the sequence

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