Ques 1

#include <stdio.h>
#include <string.h>

int main()
{
    char arr[8];
    scanf("%s",arr); //take input
    int sign=1, ind=0, num=0;
    //check for negative number
    if(arr[0]=='-')
    {
        sign = -1;
        ind = 1;
    }
    //convert char array into integer
    while(arr[ind]!='\0')
    {
        if(arr[ind]>='0' && arr[ind]<='9')
            num = num*10+arr[ind]-'0';
        else
            break;
        ind++;
    }
    //if input was given negative it'll turn into negative number
    num*=sign;
    printf("%d\n",num); //print output

    return 0;
}