Reversing array in C

My array works fine if array is above 7 and if below 7 it will stuck at 7 and the remaining array will be filled with random characters

int main()
{
    char inputString[1001];

    for (int i = 0 ; i < sizeof(inputString) ; ++i) {
        scanf("%c", &inputString[i]);
    }
    int length=0;
    
    while(inputString[length] != '\0') length++;

    // Reverse String
    int x;
    printf("%d\n", length+1);
    for(x = length-1; x >= 0; x--) {
        printf("%c", inputString[x]);
    }

    return 0;
}

TBH, there are many errors in that code, but i don’t know how to fix it.

What can i do in this situation?

>Solution :

Start by initializing the array:

char inputString[1001] = {0};