c编程代码
# include & ltstdio.h & gt
void main()
{
char a,b,c;
for(a = ' x ';a & lt= ' za++)
{
如果(a!='x ')
for(b = ' x ');b & lt= ' zb++)
{
for(c = ' x ');c & lt= ' zc++)
如果(c!= ' x ' & amp& ampc!= ' z ' & amp& amp答!= b & amp& amp答!= c & amp& ampb!=c)
printf("a:%c\nb:%c\nc:%c\n ",a,b,c);
}
}
}