#include <stdio.h>

/*copy input to output;2nd version*/

main()

{

int c;

while ((c =getchar()) != EOF)

putchar(c);

}

#include<stdio.h>

/*copy input to output;1st version */

main(){

int c;

c =getchar();

while(c != EOF){

putchar(c);

c =getchar();

}

}

#include <stdio.h>

/*print Fahrenheit-Celsius table for fahr = 0,20, ………., 300; floating-point version*/

main()

{

float fahr,celsius;

int lower,upper,step;

lower = 0; /*lower limit of temperature table*/

upper = 300; /*upper limit */

step = 20; /*step size */

fahr = lower;

while (fahr <= upper){

celsius =(5.0/9.0) * (fahr – 32.0);

printf(“%3.0f %6.1f\n”,fahr,celsius);

fahr = fahr + step;

}

}

}

#include <stdio.h>

/*print Fahrenheit-Celsius table

for fahr =0,20,…….,300 */

main()

{

int fahr,celsius;

int lower,upper,step;

lower =0;

upper =300;

step =20;

fahr =lower;

while(fahr <= upper){

celsius =5 *(fahr – 32) / 9;

printf(“%d\t%d\n”,fahr,celsius);

fahr =fahr + step;

}

}

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Good company in a journey makes the way seem shorter. — Izaak Walton