conversion

gistfile1.c

/*fahrenheight to celsius program*/                                                             
                                                                                                
#include <stdio.h>                                                                              
                                                                                                
#define LOWER 0                                                                                 
#define UPPER 300                                                                               
#define STEP  20                                                                                
                                                                                                
int celsius(int);                                                                               
                                                                                                
main()                                                                                          
{                                                                                               
    int fahr;                                                                                   
                                                                                                
    for (fahr = LOWER; fahr < UPPER; fahr = fahr + STEP)                                        
        printf("%d\t%d\n", fahr, celsius(fahr));                                                
    return 0;                                                                                   
}                                                                                               
                                                                                                
celsius(int f)                                                                                  
{                                                                                               
    int c;                                                                                      
                                                                                                
    c = 5 * (f - 32) / 9;                                                                   
    return c;                                                                                   
}