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#include <stdio.h>
void mini_printf(char *, int *);
void putint(int);
int power(int, int);
int goal(int, int);
#define MAXDIGITS 31
void mini_printf(char *fmt, int *values)
{
int i, j;
/* Parse the format string */
for (i = j = 0; fmt[i] != '\0'; i++) {
if (fmt[i] != '%')
putchar(fmt[i]);
else {
i++;
switch (fmt[i]) {
case 'd':
/* %d: output the next int */
putint(values[j]);
j++;
break;
case '%':
putchar('%');
break;
default:
putchar(fmt[i]);
break;
}
}
}
}
/* output integer i as string to stdout */
void putint(int i) {
int j;
char buf[MAXDIGITS];
if (i == 0) { putchar('0'); return; };
if (i < 0) { putchar('-'); i = -i; };
if (0) j = i; /* force j dynamic, if i is */
j = 0;
while (i > 0) {
buf[j++] = i % 10 + '0';
i /= 10;
}
while (j > 0) putchar(buf[--j]);
}
/* Return the nth power of x */
int power(int x, int n)
{
int pow;
pow = 1;
while (n > 0) {
pow = pow * x;
n--;
}
return pow;
}
int goal(int x, int n)
{
int v[2];
v[0] = power(x, n);
mini_printf("Power = %d\n", v);
return 0;
}
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