int digit12[924];
void n2digit12(){
int i1, i2, i3, i4, i5, i6;
int ix = 0;
for (i1 = 0; i1 < 12; i1++){
for (i2 = i1 + 1; i2 < 12; i2++){
for (i3 = i2 + 1; i3 < 12; i3++){
for (i4 = i3 + 1; i4 < 12; i4++){
for (i5 = i4 + 1; i5 < 12; i5++){
for (i6 = i5 + 1; i6 < 12; i6++){
digit12[ix++] = (1 << i1) + (1 << i2) + (1 << i3)
+ (1 << i4) + (1 << i5) + (1 << i6);
}
}
}
}
}
}
}
int encode(int n, int x, int y) {
static bool flag = true;
if (flag) n2digit12(), flag = false;
int bit = 1;
for (int i = 0; i < 12; i++,bit<<=1){
if ((digit12[x] & bit) && !(digit12[y] & bit))
return i + 1;
}
return 0;
}
int digit12[924];
void n2digit12(){
int i1, i2, i3, i4, i5, i6;
int ix = 0;
for (i1 = 0; i1 < 12; i1++){
for (i2 = i1 + 1; i2 < 12; i2++){
for (i3 = i2 + 1; i3 < 12; i3++){
for (i4 = i3 + 1; i4 < 12; i4++){
for (i5 = i4 + 1; i5 < 12; i5++){
for (i6 = i5 + 1; i6 < 12; i6++){
digit12[ix++] = (1 << i1) + (1 << i2) + (1 << i3)
+ (1 << i4) + (1 << i5) + (1 << i6);
}
}
}
}
}
}
}
int decode(int n, int q, int h) {
static int flag = true;
if (flag) dec::n2digit12(),flag=false;
int bit = 1 << (h - 1);
return (dec::digit12[q] & bit) != 0;
}
Compilation message
decoder.cpp: In function 'int decode(int, int, int)':
decoder.cpp:26:12: error: 'dec' has not been declared
if (flag) dec::n2digit12(),flag=false;
^~~
decoder.cpp:28:10: error: 'dec' has not been declared
return (dec::digit12[q] & bit) != 0;
^~~
