for loop in c programming example - Wikitechy

What is While Loop in C Language with example ?

webmaster — Mon, 03 Oct 2022 11:52:50 +0000

While loop evaluates the conditions inside the brackets.
If the condition returns true, the statements inside the while loop body will be executed.
Condition inside the while loop is executed once again.
This process goes on until the condition in the while loop becomes false.
Once the condition is false, while loop terminates.

while (testExpression) {
  // the body of the loop 
}

// Print numbers from 1 to 5

#include 
int main() {
  int i = 1;
    
  while (i <= 5) {
    printf("%d\n", i);
    ++i;
  }

  return 0;
}

Editor — Mon, 12 Jul 2021 19:55:57 +0000

main()
{
int x=20,y=35;
x = y++ + x++;
y = ++y + ++x;
printf("%d %d\n",x,y);
} ?

While calculating the x value, x & y values are post incremented. So, the values of x & y are added and then incremented i.e. x=56, y=36

While calculating the y value, x & y values are preincremented, so x & y values are incremented and then added i.e x=57, y=37.

{ x=y++ + x++; } equal to

 

x=y+x;//35+20
x++; //56
y++; //36
}

y=++y + ++x; is equal to

 

++y;//37
++x;//57
y=y+x;//37+57
}

Output:

x=57
 y=94