Programiranje u C-u

switch NAREDBA

VJEŽBA C11
Napišite ponovno prethodni program koji prihvaća dva broja i operator koristeći switch naredbu.

        /* Ilustrira ugniježđene if else i višestruke argumente za scanf funkciju.  */

        #include <stdio.h>

        main()
        {
                int  invalid_operator = 0;
                char  operator;
                float  number1, number2, result;

                printf("Unesite dva broja i operator\n");
                printf(" number1 operator number2\n");
                scanf("%f %c %f", &number1, &operator, &number2);

                if(operator == '*')
                        result = number1 * number2;
                else if(operator == '/')
                        result = number1 / number2;
                else if(operator == '+')
                        result = number1 + number2;
                else if(operator == '-')
                        result = number1 - number2;
                else
                        invalid_operator = 1;

                if( invalid_operator != 1 )
                        printf("%f %c %f je %f\n", number1, operator, number2, result );
                else
                        printf("Nedozvoljeni operator.\n");

        }

Solution

/* Ilustrira switch */

#include <stdio.h>

        main()
        {
                int invalid_operator = 0;
                char operator;
                float number1, number2, result;

                printf("Unesite dva broja i operator\n");
                printf(" number1 operator number2\n");
                scanf("%f %c %f", &number1, &operator, &number2);

                switch( operator ) {
                        case '*' : result = number1 * number2; break;
                        case '/' : result = number1 / number2; break;
                        case '+' : result = number1 + number2; break;
                        case '-' : result = number1 - number2; break;
                        default : invalid_operator = 1;
                }
                switch( invalid_operator ) {
                        case 1 : printf("Nedozvoljeni operator.\n"); break;
                        default : printf("%f %c %f je %f\n", number1, operator, number2, result );
               }
        }