Q1:

What will be the output of the program?

#include<stdio.h>
int main()
{
    int i=-3, j=2, k=0, m;
    m = ++i || ++j && ++k;
    printf('%d, %d, %d, %d\n', i, j, k, m);
    return 0;
}

Step 1: int i=-3, j=2, k=0, m; here variable i, j, k, m are declared as an integer type and variable i, j, k are initialized to -3, 2, 0 respectively. Step 2: m = ++i || ++j && ++k; here (++j && ++k;) this code will not get executed because ++i has non-zero value.
becomes m = -2 || ++j && ++k;
becomes m = TRUE || ++j && ++k; Hence this statement becomes TRUE. So it returns '1'(one). Hence m=1.
Step 3: printf('%d, %d, %d, %d\n', i, j, k, m); In the previous step the value of variable 'i' only increemented by '1'(one). The variable j,k are not increemented. Hence the output is '-2, 2, 0, 1'.