linux下C++能做程序界面吗?

void main()
{
unsigned char digest[16] ;
char output1[32] ;
int i = 0 ;
for(i=0; i<16; i++)
{
digest[i] =97 + i ;
}

for (i = 0; i < 16; i++)
{
sprintf(&(output1[2*i]),"%02x",(unsigned char)digest[i]);
sprintf(&(output1[2*i+1]),"%02x",(unsigned char)(digest[i]<<4));
}

for(i=0; i<32; i++)
{
printf("%c ",output1[i]) ;
}
printf("\n") ;
for(i=0; i<16; i++)
{
printf("%x",digest[i]) ；//