What is for() statement in C used for? code example

Example 1: for loop in c

int i;
for (i = 0; i < n; ++i) { // n is the number of iterations
	// Code here
}

Example 2: for statement in c

for(int i=0; i<10; i++)
  printf("%d ", i)  /* displays:  0 1 2 3 4 5 6 7 8 9 */