Thread: Error at if function?

I'm new to C programming and as I was writing this program I ran into a couple of issues, the first of which was the program ignoring the second scanf function, that was fixed by adding a space before %c. The second problem that I ran into which I don't know how to fix is that whenever I enter Y into the second scanf function, the program exits and gives me an error.The other if commands work perfectly. I inserted a printf before the loop inside the if(a=='Y') just to check where the program is exiting and it didn't print it, seems like the issue is in the if command. Here's the code

Code:

#include<stdio.h>


int main(){
    int i,b;
    char c[100],a;
    for(i=0;i<100;i++){
        printf("Please enter a character\n");
        scanf(" %c",&c[i]);
        if(c[i]=='0'){
            break;
        }
    }
    printf("If you want to print the entered characters type Y, otherwise type N\n");
    scanf(" %c",&a);
    if(a=='Y'){
        for(i=b;b>=0;b--){
            printf("%c and it's location in the array is %d\n",c[b],b);
        }
    }
    else if(a=='N'){
        printf("Goodbye!");
    }
    else{
        printf("Error");
    }
    
    return 0;
}

An array of C[] is actually an adresse itself. Therefore you do not need the adresse operator "&"

I just tried the code without the address operator "&". And it didn't work at all, anyhow that's not the issue here. Thank you anyways

I'm sorry but I don't know how to turn up the warning level. And besides, in the for loop right after if(a=='Y') b is initialized as being equal to i. Second of all, it's not even reaching the loop, it's exiting as soon as I type Y, I've tried adding a printf function right before the loop and nothing got printed, which leads me to think that the error is in the if function

Thank you! I just rewrote the code using a do while function, and I assigned b as being equal to i right before it breaks the for loop. I didn't know that i becomes undefined once the loop is broken. Thank you again

Thank you That seemed to fix it. I didn't know that i becomes undefined once the loop is broken.

Yeah I just rewrote it again to use the for loop. I also didn't know you could do the initialization outside of the for loop. My professor never mentioned that. Guess I should try and experiment more often.