Question

#include <stdio.h>
int main() {
int n = 3, count, value=0;
for(count=1,count<=n; ++count)
{
value+=count;
}
printf("value=%d", value);​

Answer 1

but what's your question

Answer 2

Given Program :

#include <stdio.h>

int main()

{

  int n = 3, count, value=0;

  for(count=1;count<=n; ++count)

  {

     value+=count;

  }

  printf("value=%d", value);

}

Dry Run :

n = 3

1) When count = 1

Condition : count<=n ⇒ 1 <= 3 (True)

So, block will execute

value+=count; ⇒ value = value + count; ⇒ value = 0 + 1 = 1

So, value = 1

Update : ++count = ++1 = 2

So, count = 2

2) When count = 2

Condition : count<=n ⇒ 2 <= 3 (True)

So, block will execute

value+=count; ⇒ value = value + count; ⇒ value = 1 + 2 = 3

So, value = 3

Update : ++count = ++2 = 3

So, count = 3

3) When count = 3

Condition : count<=n ⇒ 3 <= 3 (True)

So, block will execute

value+=count; ⇒ value = value + count; ⇒ value = 3 + 3 = 6

So, value = 6

Update : ++count = ++3 = 4

So, count = 4

4) When count = 4

Condition : count<=n ⇒ 4 <= 3 (False)

So, block will not execute

So, finally value = 6