Hi , who can help me to find my error

Question

#include <stdio.h>
int main() {
int temp;
scanf("%d", &temp);
switch (temp)
{
case (temp <= 20):
printf("Ooooohhhh! Damn cool!\n");
case (temp > 20 && temp <= 30):
printf("Rain rain here again!\n");
case (temp > 30 && temp <= 40):
printf("Wish I am on Everest\n");
default:
printf("Good old nagpur weather\n");
}
return 0;
}

Answer 1

There should be break statement and also your cases are wrong. In switch you have passed int value but in your cases there is Boolean value which will give error.

Answer 2

Thank you bro

Answer 3

I put break statements but it says the problem is in case statements , ( temp cannot appear in a constant-expression) can we usually write case(temp<=20) something like that?

Answer 4

Dostonbek Your program is incorrect. It should be look like this.

The data type of cases should be same as passed in switch

#include <stdio.h>
int main() {
int temp;
int a = 0;
scanf("%d", &temp);

if(temp <= 20)
a = 1;
else if (temp > 20 && temp <= 30)
a = 2;
else if (temp > 30 && temp <= 40)
a = 3;

switch (a)
{
case 1:
printf("Ooooohhhh! Damn cool!\n");
break;
case 2:
printf("Rain rain here again!\n");
break;
case 3:
printf("Wish I am on Everest\n");
break;
default:
printf("Good old nagpur weather\n");
break;
}
return 0;
}