For Loop inside While Loop

[mesmer]

This simple loop construct is confusing me. I'm not seeing why the output is what it is. When I look at the code it seems like this should print one set of statements with x going from 0 to 4. Like this

x =1
-array[0] =1
-arrary[1] = 2

...and so on. why is this not the case?

#include <stdio.h>

int main(void)
{
    int array[5];
    int i;
    int x=0;
    while(++x < 5) {
        printf("*** x = %d\n",x); 
        for (i = 0; i < 5; i++) { 
            array[i] = x; 
            printf("\t - array[%d] = %d\n", i, array[i]); 
         }
         printf("*** \n");
    }
    return 0;
}

OUTPUT

*** x = 1
	 - array[0] = 1
	 - array[1] = 1
	 - array[2] = 1
	 - array[3] = 1
	 - array[4] = 1
*** 
*** x = 2
	 - array[0] = 2
	 - array[1] = 2
	 - array[2] = 2
	 - array[3] = 2
	 - array[4] = 2
*** 
*** x = 3
	 - array[0] = 3
	 - array[1] = 3
	 - array[2] = 3
	 - array[3] = 3
	 - array[4] = 3
*** 
*** x = 4
	 - array[0] = 4
	 - array[1] = 4
	 - array[2] = 4
	 - array[3] = 4
	 - array[4] = 4
***

[laserlight]

why is this not the case?

Because x remains the same in the inner loop, so on each iteration of the for loop, you are assigning the same value of x to the corresponding element of the array named array.

It looks like you do not actually need x, since i serves the same purpose. You just need to make it such that you assign i+1 to the ith element of array. This also means that you only need a single loop, not nested loops.