Si të bëjmë një makinë llogaritëse.

#include <stdio.h>
#include <conio.h>
main()
{
float q,b,a;
char c;

clrscr();

printf(“\t\t\tJep dy numra:”);
scanf(“%f%f”,&a,&b);
printf(“\n\t\t\t_________________”);
printf(“\n\t\t\t| + |\n\t\t\t| – |\n\t\t\t| * |\n\t\t\t| / |\n\t\t\t|Zgjidh veprimin|”);
printf(“\n\t\t\t_________________”);
scanf(“%c%c”,&c,&c);

switch (c)
{
case ‘+’ : printf(“\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t========================”);
printf(“\n\t\t\t\t\t\t=Mbledhja=”);
q=a+b;
printf(“\n\t\t\t\t\t\t========================”);
printf(“\n\t\t\t\t\t\t a+b=%0.2f”,q);
printf(“\n\t\t\t\t\t\t========================”);
break;
case ‘-‘ : printf(“\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t=======================”);
printf(“\n\t\t\t\t\t\t=Zritja=”);
q=a-b;
printf(“\n\t\t\t\t\t\t=======================”);
printf(“\n\t\t\t\t\t\t a-b=%0.2f”,q);
printf(“\n\t\t\t\t\t\t=======================”);
break;
case ‘*’ : printf(“\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t==============================”);
printf(“\n\t\t\t\t\t\t=Shumezimi=”);
printf(“\n\t\t\t\t\t\t==============================”);
q=a*b;
printf(“\n\t\t\t\t\t\t a*b=%0.2f”,q);
printf(“\n\t\t\t\t\t\t==============================”);
break;
case ‘/’ : printf(“\n\n\n\n\n\n\n\n\n\n\n\t\t\t=======================”);
printf(“\n\t\t\t=Pjestimi=”,q);
printf(“\n\t\t\t=======================”);
q=a/b;
printf(“\n\t\t\t a/b=%0.2f”,q);
printf(“\n\t\t\t=======================”);
break;
default : printf(“\n\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t================”);
printf(“\n\t\t\t\t\t\t=zgjedhje e gabuar=”);
printf(“\n\t\t\t\t\t\t================”);
break;
}
}