what will be the value of i and why ?

Question

#include<stdio.h>

#include<string.h>

int main()

{

int z,i=0;

while(scanf("%d",&z)==1)

{

i++;

printf("%d",z);

}

printf("%d",i);

}

Answer 1

As long as an integer is correctly input, the while loop will run forever...

scanf returns the number vars that correctly match the format string, hence formatted..

since a single integer is being input, as long as an integer value is input, the loop will continue...

So for example, if the user inputs 5 integers and then a string, the loop will execute 5 times

and fail on the 6th. In this case i=5

If for example, the user inputs 100 integer values and then a string, the loop will execute 100

times and fail of the 101st. In this case i=100

Therefore, the value of i will be the number of integers input by the user;

the integer that is input will be displayed each time through the loop...

finally the value of I is output