2 variable for loop allowed in C?

In C is it allowed to use 2 variables in one line of a for loop?
This code does not compile.

#include<stdio.h>
int main(){
    int arr[3][4]={
    {0,3,5,2}, 
    {2,13,4,6},
    {7,33,12,5} 
    };

    int i,j;
    for (i=0,j=0;i++,j++;i<3, j<4){
        printf("%d ", arr[i][j]);
    }
}

>Solution :

It is OK to have as many variables as you wish in the for loop. The only problem with for (i=0,j=0;i++,j++;i<3, j<4) that the conditions are in the wrong place and you should use a logical operator as comma will simply take into account the last comparison.

for (i=0,j=0; i<3 && j<4;i++,j++)

Bear in mind that both variables will increment at the same time and it will not create two loops. So your loop will stop execute when i is equal to 3

int main(void)
{
    for (int i=0, j=0; i<3 && j<4;i++,j++)
    {
        printf("i = %d, j = %d\n", i, j);
    }
}

Result:

i = 0, j = 0
i = 1, j = 1
i = 2, j = 2

https://godbolt.org/z/P5oxsr9Wf