🔄Switch statement

A tool to facilitate complex if ... else if statements.

The switch and case statements cannot be used most of the time since they are not in the Norm.

It could be useful in some exams, and you can use it there since there is no Norm during the exams.

Switch statement

The switch and case statements help control complex conditional and branching operation.

Examples

I'll take as example one of the exercises of the exam rank 02 - level 2, the do_op one, go read the subject there, then come back here.

I'll first write it using if and else if statements, then I'll write the exact same thing using the switch statement.

If ... else if

if (av[2][0] == '+')
    printf("%d", atoi(av[1]) + atoi(av[3]));
else if (av[2][0] == '-')
    printf("%d", atoi(av[1]) - atoi(av[3]));
else if (av[2][0] == '*')
    printf("%d", atoi(av[1]) * atoi(av[3]));
else if (av[2][0] == '/')
    printf("%d", atoi(av[1]) / atoi(av[3]));
else if (av[2][0] == '%')
    printf("%d", atoi(av[1]) % atoi(av[3]));

Switch

swtich (av[2][0])
{
    case '+':
        printf("%d", atoi(av[1]) + atoi(av[3]));
        break;
    case '-':
        printf("%d", atoi(av[1]) - atoi(av[3]));
        break;
    case '*':
        printf("%d", atoi(av[1]) * atoi(av[3]));
        break;
    case '/':
        printf("%d", atoi(av[1]) / atoi(av[3]));
        break;
    case '%':
        printf("%d", atoi(av[1]) % atoi(av[3]));
        break;
}

As you can see, both codes are pretty similar, but I personally think that the switch statement is clearer and easier to write.

The switch statement takes a bit more place but could be useful in some cases.

You can find more details about it here.