virus?

i got this code and it worked but now it makes error. works with proteos. can processor cpu have another virus?

void Secret_Code(unsigned char *input,unsigned long len)
{ unsigned int k; unsigned int nps = 0; for(k = 0; k < len; k++) { if(input[k] == 0xCC) { if(input[k + 1] == 0xCC && input[k + 2] == 0xCC && input[k + 3] == 0xCC) { switch(rand()%3) { case 0: input[k] = 0x57; input[k + 1] = 0x5F; k = k + 1; break; case 1: input[k] = 0xC0; input[k + 1] = 0xFE; input[k + 2] = 0xC8; input[k + 3] = 0xFE; k=k+3; break; case 2: input[k] = 0xF8; k++; break; } } } else if(input[k] == 0x90) { nps = NpsInARow(input,k); if(nps > 1) { printf("Found (In a row: %d)!\n",nps); } switch(nps){ case 3: input[k] = 0x14; input[k + 1] = 0x21; input[k + 2] = rand(); k = k + 2; break; case 4: input[k] = 0x56; input[k + 1] = 0x19; input[k + 2] = 0x47; input[k + 3] = 0x29; k = k + 3; break; case 5: input[k] = 0x73; input[k + 1] = 0x23; input[k + 2] = 0x95; input[k + 3] = 0x02; input[k + 4] = rand(); k = k + 4; break;

} } }
}