Question

#include
#include
void calculate(char *a, int i, int n);
void swap (char *x, char *y):
int m= 0;
int main
{
char str[10] = "IoT":
int len=0,i=0;
len = strlen(str);
calculate(str, 0, len-1);
printf("%d",m);
void swap (char *x, char *y) {
char temp:
temp = *x;
*x=*y;
*y = temp:
}
void calculate(char *a, int i, int n) {
int j=0;
if(i=n) {
m++;
}
else {
for (j = 1; j swap((a+i). (a+j));
calculate(a,i+1, n);
swap((a+i), (a+j))​

Answer 1

Explanation:

(char *x, char *y) {

char temp:

temp = *x;

*x=*y;

*y = temp:

}

void calculate(char *a, int i, int n) {

int j=0;