[philay]

#include<stdio.h>
int main ()
{
int i,j;

for(i=1;i<=5;i++)  {
  for(j=1;j<=i;j++)
    printf("%i",i);
  printf("\n");
}

return 0;

}

The output is
1
22
333
4444
55555

this is the "for" method, how do i convert it into while and do..while format? i just still noob in programming , any expert help me out pls? thx

[Salem]

for ( a ; b ; c ) d;

Is approximately
a;
while ( b ) { d; c; }

[philay]

ya, but if got 2 loops? for(i=0;i<=8;i++) the first loop then inside another for (j=0;j<=i;j++)?

[Salem]

So two for loops become two while loops - what's the problem?

[philay]

int i=1,j=1;

while(i<=5)  {
    printf("%i",i);
    i++;
    while(j<=i)  {
       printf("\n");
       j++;
}

but if i write like this, i compile cant get the correct output same as the for loop
1
22
333
4444
55555

[philay]

int i=1,j=1;

do {
   printf("%i",i);
   i++;
do {
   printf("\n");
   j++;
}while(j<=i);
}while(i<=5);

[shabbir]

For while loop you should increment the counter as the last statement and then it will be equivalent.

Do while loops are a bit different and cannot be equal to for loop but in your case applying the increment as the last statement of the loop would do.

[philay]

i don't really get what u really mean.. how about u post the code for me? then i will know better

[Salem]

Refer to my other post

for(i=1;i<=5;i++)  {
  for(j=1;j<=i;j++)
    printf("%i",i);
  printf("\n");
}

Becomes

i=1;
while ( i<=5 ) {
  for(j=1;j<=i;j++)
    printf("%i",i);
  printf("\n");
  i++;
}

Now apply the same transformation to the inner loop, and you're done.

[philay]

kk, thx so much for the help