fahrtocel

gistfile1.c

/*fahrenheight to celsius program*/                                                                 
                                                                                                    
#include <stdio.h>                                                                                  
                                                                                                    
#define LOWER   0                                                                                   
#define UPPER   300                                                                                 
#define STEP    20                                                                                  
                                                                                                    
float conversion(float fahr, float celsius);                                                        
                                                                                                    
main()                                                                                              
{                                                                                                   
    fahr = LOWER;                                                                                   
    while (fahr <= UPPER)                                                                           
        printf("%3.0f\n", conversion(fahr, celsius));                                               
    return 0;                                                                                       
}                                                                                                   
                                                                                                    
int conversion                                                                                      
{                                                                                                   
    int i;                                                                                          
                                                                                                    
    for (i = 0; i < 300; ++i) {                                                                     
        celsius = (5.0/9.0) * (fahr-32.0);                                                          
        fahr = fahr + step;                                                                         
    }                                                                                               
    return i;                                                                                       
}