int main(int argc, char **argv) {
/*
test_reverse();
test_strip();
test_add();
*/
int num_test_cases;
scanf("%d", &num_test_cases);
for(int i = 0; i < num_test_cases; i++) {
char num_1[100], num_2[100];
scanf("%s %s", num_1, num_2);
inplace_reverse(num_1);
inplace_reverse(num_2);
char *res = add(num_1, num_2);
inplace_reverse(res);
res = strip_zeros(res);
printf("%s\n", res);
}
return 0;
}
void test_strip() {
char test[] = "00123";
char *stripped_test = strip_zeros(test);
assert(strcmp(stripped_test, "123") == 0);
}
/* based on minprintf from K&R page 156 */
int vsprintf(char *buf, const char *fmt, va_list args)
{
va_list ap = args;
char *p;
char *s_val;
char *strip;
char c_val;
int i_val;
double d_val;
char cbuf[2] = {0,0};
(void)d_val;
for(p = (char *)fmt; *p; p++)
{
if(*p != '%'){
cbuf[0] = *p;
strcat(buf, cbuf);
continue;
}
switch(*++p)
{
case 'b':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 2, 32);
strip = strip_zeros(s_val);
strcat(buf,strip);
//puts(strip);
// afree(s_val);
break;
case 'c':
c_val = va_arg(ap, int);
//putc(c_val);
cbuf[0] = c_val;
strcat(buf, cbuf);
break;
case 'u':
case 'd':
case 'i':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 10, 10);
strip = strip_zeros(s_val);
//puts(strip);
strcat(buf,strip);
// afree(s_val);
break;
case 'f':
d_val = va_arg(ap,double);
break;
case 's':
s_val = va_arg(ap, char *);
//puts(s_val);
if(s_val != NULL)
strcat(buf,s_val);
else
strcat(buf,"(null)");
// afree(s_val);
break;
case 'X':
//puts("0x");
strcat(buf,"0x");
case 'x':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 16, 8);
strip = strip_zeros(s_val);
//puts(strip);
strcat(buf,strip);
// afree(s_val);
break;
default:
//console_puts("ASFZSDFSDAF");
//putc(*p);
break;
}
// for(int i= 0; i < 100; i++)
// allocp[i] = 0;
}
return 0;//buf - _buf;
}
static char *int_to_string(int num, int base, int size)
{
int i;
char *tmp = NULL;//allocp;//alloc(size);
for(i = 0; i < 100; i++)
tmp[i] = 0;
char * ascii = {"0123456789ABCDEF"};
memset(dp, 0, 256);
// if(sign)
// tmp++;
/*int start = 0;
int temp = num;
if((num < 0) && (base == 10))
{
// start = 1;
// size += 1;
*tmp++ = '-';
num = -1 * num;
}*/
if(num < 0 && base == 10)
{
strcat(dp, "-");
num = -1 * num;
}
if(num == 0)
{
tmp[0] = '0';
tmp[1] = 0;
return tmp;
}
switch(base)
{
case 2:
for(i = size-1; i >= 0; i--)
{
tmp[i] = ascii[num & 0x1];
num >>= 1;
}
break;
case 10:
for(i = size-1; i >= 0; i--)
{
tmp[i] = ascii[num % 10];
num /= 10;
}
break;
case 16:
for(i = 7; i >= 0; i--)
{
tmp[i] = ascii[num & 0xF];
num >>= 4;
}
break;
default:
puts("invalid base given to int_to_string");
break;
}
// if(temp < 0)
// tmp--;
// tmp[size+1] = '\0';
tmp = strip_zeros(tmp);
strcat(dp, tmp);
return dp;
}
/* based on minprintf from K&R page 156 */
void oprintf(char *fmt, ...)
{
va_list ap;
char *p;
char *s_val;
char *strip;
char c_val;
int i_val;
double d_val;
(void)d_val;
va_start(ap, fmt);
for(p = fmt; *p; p++)
{
if(*p != '%'){
putc(*p);
continue;
}
switch(*++p)
{
case 'b':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 2, 32);
strip = strip_zeros(s_val);
puts(strip);
// afree(s_val);
break;
case 'c':
c_val = va_arg(ap, int);
putc(c_val);
break;
case 'd':
case 'i':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 10, 10);
strip = strip_zeros(s_val);
puts(strip);
// afree(s_val);
break;
case 'f':
d_val = va_arg(ap,double);
break;
case 's':
s_val = va_arg(ap, char *);
puts(s_val);
// afree(s_val);
break;
case 'X':
puts("0x");
case 'x':
i_val = va_arg(ap, int);
s_val = int_to_string(i_val, 16, 8);
strip = strip_zeros(s_val);
puts(strip);
// afree(s_val);
break;
default:
putc(*p);
break;
}
// for(int i= 0; i < 100; i++)
// allocp[i] = 0;
}
va_end(ap);
}
