Thread: What is it I'm forgetting!?

I've been sitting here wondering what it is I'm forgetting and why it is NOT compiling for more than an hour, I've done it via pico and codepad

Can someone please help!

Code:

#include <stdio.h>
#include <stdlib.h>

main()

//HW2

{
int n=0;
int m=0;
int a=0;

        printf("Enter the amount of Adults:\n");

        scanf("%d", &n);


    if (n>2 || n<2) {
        printf("Error! you are required to input 2 adults\n");
    exit(1);
    }

        printf("Enter the amount of Children:\n");

        scanf("%d", &m);


    if (m>1 || m<1) {
        printf("Error! you are required to input 1 child\n");
    exit(1);
    }

        printf("How old is your child?:\n");

        scanf("%d", &a);

    if (a=<6)
    printf("Your child may enter the park for free.\n");
        else if (a => 7 || a =< 12)
    printf("Your child will get 10% off\n");
        else if (a > 12)
    printf("You do not have a child and they must pay the adult free.\n");

The errors I am getting via codepad: http://codepad.org/hs8IbtAI

The errors via pico

Code:

hw2.c: In function 'main':
hw2.c:37: error: expected expression before '<' token
hw2.c:39: error: expected expression before '>' token
hw2.c:42: error: expected declaration or statement at end of input

Guess "=<" is not right; try "<=".

Tim S.

It's because it's less-than-or-equal to i.e.

Code:

if (a <= 6)

You should indent your code properly, e.g.,

Code:

#include <stdio.h>
#include <stdlib.h>

main()
{
    //HW2

    {
        int n = 0;
        int m = 0;
        int a = 0;

        printf("Enter the amount of Adults:\n");

        scanf("%d", &n);

        if (n > 2 || n < 2) {
            printf("Error! you are required to input 2 adults\n");
            exit(1);
        }

        printf("Enter the amount of Children:\n");

        scanf("%d", &m);

        if (m > 1 || m < 1) {
            printf("Error! you are required to input 1 child\n");
            exit(1);
        }

        printf("How old is your child?:\n");

        scanf("%d", &a);

        if (a <= 6)
            printf("Your child may enter the park for free.\n");
        else if (a >= 7 || a <= 12)
            printf("Your child will get 10% off\n");
        else if (a > 12)
            printf("You do not have a child and they must pay the adult fee.\n");

    }

Now, it is clear that you have an extra opening brace that should be removed.

Also, you should declare main as explicitly having a return type of int.

Code:

#include <stdio.h>
#include <stdlib.h>
 
main()
{
    //HW2

    int n = 0;
    int m = 0;
    int a = 0;

    printf("Enter the amount of Adults:\n");
    scanf("%d", &n);

    if (n != 2) {
        printf("Error! you are required to input 2 adults\n");
        exit(1);
    }

    printf("Enter the amount of Children:\n");
    scanf("%d", &m);

    if (m != 1) {
        printf("Error! you are required to input 1 child\n");
        exit(1);
    }

    printf("How old is your child?:\n");
    scanf("%d", &a);

    if (a <= 6)
        printf("Your child may enter the park for free.\n");
    else if (a >= 7 || a <= 12)
        printf("Your child will get 10% off\n");
    else if (a > 12)
        printf("You do not have a child and they must pay the adult fee.\n");
    
    return 0;
    
}

Originally Posted by iamtazb

My prof never taught us to

a) declare main
b) add the stuff in the bracket

Is it beneficial to do it that way or just keep it at

Code:

main(){
}

for now?

FAQ > main() / void main() / int main() / int main(void) / int main(int argc, char *argv[]) - Cprogramming.com