hello

gistfile1.c

/*fahrenheight to celsius program*/                                                             
                                                                                                
#include <stdio.h>                                                                              
                                                                                                
#define LOWER 0                                                                                 
#define UPPER 300                                                                               
#define STEP  20                                                                                
                                                                                                
int celsius(float);                                                                             
                                                                                                
main()                                                                                          
{                                                                                               
    float fahr;                                                                                 
                                                                                                
    printf("Fahrenheight    Celsius\n");                                                        
    for (fahr = LOWER; fahr < UPPER; fahr = fahr + STEP)                                        
        printf("%3.0f\t\t\t%6.1d\n", fahr, celsius(fahr));                                      
    return 0;                                                                                   
}                                                                                               
                                                                                                
celsius(float f)                                                                                
{                                                                                               
    int c;                                                                                      
                                                                                                
    c = (5.0/9.0) * (f - 32.0);                                                                 
    return c;                                                                                   
}