Please Explain me this C code [closed] - c

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Can some one please help me on understanding this code especially the 'space' part. How is value of space in spite being 4 printing no space in the first row of the output of this code:
#include <stdio.h>
/* Inverted mirrored right triangle */
int main(int argc, char *argv[])
{
int i, j, space;
for (i = 0; i <= 5 ;i++) {
for (space = 5 - i; space <= 4; space++) {
printf(" ");
}
for (j = 5 - i; j >= 0; j--) {
printf("*");
}
printf("\n");
}
return 0;
}

Answer 1

concentrate on this piece of code
for (i = 0; i <= 5 ;i++) {
--> for (space = 5 - i; space <= 4; space++) {
printf(" ");
}
in first iteration of inner for loop space value is space: 5-0 = 5
as the i:0 and for we have condition space <= 4 and this not satisfy control does not
go in to the inner of for braces and not print any space (for first row)
you must know how the for(;;) works.
for (i=0 ; i<10 ; i++ ) {
printf("%d",i);
}
// end loop line
for (loop index initialize ; condition ; do after innerloop commands ) {
command1;
command2;
}
first of all i:0 and because i is less than 10 inner of loop executes
and print 0 on screen.
after printing i are incremented by one (i++ equals to i = i+1).
then i:1 , i still less than 10 and print i:1, wee see 1 on screen and so
on. until we have i:9 print 9 on screen then increase by one i:10
then last iteration come, as now i:10 and is not less than 10 the inner of
loop not execute, program control comes to after loop (end loop line).