c - How is the value of this variable incremented outside of this loop? -

i have question value of j inside nested loop.

    (potentialsum=1; potentialsum<=m; potentialsum ++)     {          (j=1;j<=n;j++)          {              if (potentialsum == 2) {                  printf("j:%d in loop\n", j);              }          }           c[potentialsum]=(j<=n) ? j : (-1);           if (c[potentialsum] == -1) {               printf("j:%d n:%d \n", j , n);          }      } 

n = 0 , m = 25.

so when run loop aforementioned values n , m, output this:

j:1 in loop j:2 in loop j:3 in loop j:4 in loop j:5 in loop j:6 in loop j:7 in loop j:8 n:7 // outside of loop 

my question when/how j incremented 8, if n=7?

this happens when potentialsum = 2, complete code click here , copy of input click here.

thanks in advance, i'm not seeing how j goes 7 8 outside of loop.

for (j=1;j<=n;j++)   //where n 7 

for( declaration ; comparison(condition checking) , increment/decrement)

after declaration, value compared, , @ end incrementing (j++)

when j=7 check condition j<=n true go inside loop. , @ increment j++.
current value of j become 8. next time check condition j<=n false come out of loop, j remain 8.