我开始编写哼唱代码的大学项目。我给出了下面的代码，对我来说似乎没问题，但我的论文中有0。不知道我在这里做错了什么。在问我的教授之前，我可以帮助我找到。
#include <iostream.h>
#include <math.h>
main(){
int alp,k;
do{
cout<<"\n ****************************************************************";
cout<<"\n \n";
cout<<"\n WELCOME TO ERROR DETECTION AND CORRECTION";
cout<<"\n";
cout<<"\n THE PROGRAM USES SINGLE BIT CORRECTION METHOD OFHAMMING CODES";
cout<<"\n \n";
cout<<"\n ****************************************************************";
cout<<"\n \n \n 1.ALPHABET \n \n 2.NUMERIC \n \n 3.EXIT \n \n ENTER THECHOICE::";
cin>> alp;
if(alp==1){
int num,err_bito,err_bitn;
int bit[]={0,0,0,0,0,0,0,0,0,0,0,0};
int bits[]={0,0,0,0,0,0,0,0,0,0,0,0};
cout << "\n \n \n THIS IS CHARACTER ERROR DETECTION ANDCORRECTION PROGRAM";
char one_char;
int aq;
cout << "\n \n \n \n Enter any a CHARACTER of upper or lower case: ";
cin >> one_char;
cout << "\n \n The character entered was : " << one_char << '\n';
aq=(int) one_char;
cout << "\n \n Its ASCII value is : " << aq << '\n';
num=aq;
bit[1]=num%2;
int a;
a=num-num%2;
int b=a/2;
bit[2]=b%2;
a=b-b%2;
b=a/2;
bit[3]=b%2;
a=b-b%2;
b=a/2;
bit[4]=b%2;
a=b-b%2;
b=a/2;
bit[5]=b%2;
a=b-b%2;
b=a/2;
bit[6]=b%2;
a=b-b%2;
b=a/2;
bit[7]=b%2;
a=b-b%2;
b=a/2;
bit[8]=b%2;
a=b-b%2;
b=a/2;
bit[9]=b%2;
a=b-b%2;
b=a/2;
bit[10]=b%2;
a=b-b%2;
b=a/2;
bit[11]=b%2;
a=b-b%2;
b=a/2;
cout << "\n \n The equivalent binary data is:";
for( k=11;k>0;k--)
cout << bit[k];
cout << endl;
int r1,r2,r3,r4,r1o,r2o,r3o,r4o,r1n,r2n,r3n,r4n;
r1=r2=r3=r4=r1o=r2o=r3o=r4o=r1n=r2n=r3n=r4n=0;
if(bit[1]==1){
r1++;
r2++;
}
if(bit[2]==1){
r1++;
r3++;
}
if(bit[3]==1){
r2++;
r3++;
}
if(bit[4]==1){
r1++;
r2++;
r3++;
}
if(bit[5]==1){
r1++;
r4++;
}
if(bit[6]==1){
r2++;
r4++;
}
if(bit[7]==1){
r1++;
r2++;
r4++;
}
if(bit[8]==1){
r3++;
r4++;
}
if(bit[9]==1){
r1++;
r3++;
r4++;
}
if(bit[10]==1){
r2++;
r3++;
r4++;
}
if(bit[11]==1){
r1++;
r2++;
r3++;
r4++;
}
r1o=r1%2;
r2o=r2%2;
r3o=r3%2;
r4o=r4%2;
cout<<"\n \n The REDUNDENT BITS are: ";
cout << r1o << r2o << r3o << r4o << endl;
r1=r2=r3=r4=0;
int tx_data[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int rx_data[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
cout <<"\n \n Data with REDUNDANT BITS are:";
tx_data[15]=bit[11];
cout << tx_data[15];
tx_data[14]=bit[10];
cout <<tx_data[14];
tx_data[13]=bit[9];
cout << tx_data[13];
tx_data[12]=bit[8];
cout << tx_data[12];
tx_data[11]=bit[7];
cout << tx_data[11];
tx_data[10]=bit[6];
cout << tx_data[10];
tx_data[9]=bit[5];
cout << tx_data[9];
tx_data[8]=r4o;
cout <<"("<<tx_data[8]<<")";
tx_data[7]=bit[4];
cout << tx_data[7];
tx_data[6]=bit[3];
cout << tx_data[6];
tx_data[5]=bit[2];
cout << tx_data[5];
tx_data[4]=r3o;
cout <<"("<< tx_data[4]<<")";
tx_data[3]=bit[1];
cout << tx_data[3];
tx_data[2]=r2o;
cout <<"("<< tx_data[2]<<")";
tx_data[1]=r1o;
cout <<"("<< tx_data[1]<<")";
cout<<endl;
cout << "\n \n The TRANSMITTED DATA is: ";
for(k=15;k>0;k--)
cout << tx_data[k];
cout << endl;
err_bito=((8*r4o)+(4*r3o)+(2*r2o)+(1*r1o)); // ERROR BIT GENERATED
for(k=15;k>0;k--)
rx_data[k]=tx_data[k];
if(rx_data[err_bito]==1)
rx_data[err_bito]=0;
else
rx_data[err_bito]=1;
cout << "\n \n The Received DATA WITH ERROR is:";
for(k=15;k>0;k--)
cout << rx_data[k];
cout << endl;
if(rx_data[3]==1){
r1++;
r2++;
}
if(rx_data[5]==1){
r1++;
r3++;
}
if(rx_data[6]==1){
r2++;
r3++;
}
if(rx_data[7]==1){
r1++;
r2++;
r3++;
}
if(rx_data[9]==1){
r1++;
r4++;
}
if(rx_data[10]==1){
r2++;
r4++;
}
if(rx_data[11]==1){
r1++;
r2++;
r4++;
}
if(rx_data[12]==1){
r3++;
r4++;
}
if(rx_data[13]==1){
r1++;
r3++;
r4++;
}
if(rx_data[14]==1){
r2++;
r3++;
r4++;
}if(rx_data[15]==1){
r1++;
r2++;
r3++;
r4++;
}
r1n=r1%2;
r2n=r2%2;
r3n=r3%2;
r4n=r4%2;
r1=r2=r3=r4=0;
if(r1o==r1n){
if(r2o==r2n){
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n No Error" << endl;
else
cout << "\n \n Not Possible" << endl;
}else{
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=12;
cout << "\n \n Error in bit 12" << endl;
}
}
}else{
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=10;
cout << "\n \n Error in bit 10" << endl;
}
}else{
if(r4o==r4n){
err_bitn=6;
cout << "\n \n Error in bit 6" << endl;
}else{
err_bitn=14;
cout << "\n \n Error in bit 14" << endl;
}
}
}
}else{
if(r2o==r2n){
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=9;
cout << "\n \n Error in bit 9" << endl;
}
}else{
if(r4o==r4n){
err_bitn=5;
cout << "\n \n Error in bit 5" << endl;
}else{
err_bitn=13;
cout << "\n \n Error in bit 13" << endl;
}
}
}else{
if(r3o==r3n){
if(r4o==r4n){
err_bitn=3;
cout << "\n \n Error in bit 3" << endl;
}else{
err_bitn=11;
cout << "\n \n Error in bit 11" << endl;
}
}else{
if(r4o==r4n){
err_bitn=7;
cout << "\n \n Error in bit 7" << endl;
}else{
err_bitn=15;
cout << "\n \n Error in bit 15" << endl;
}
}
}
}
if(rx_data[err_bitn]==1)
rx_data[err_bitn]=0;
else
rx_data[err_bitn]=1;
cout << "\n \n The CORRECTED DATA is: ";
for(k=15;k>0;k--)
cout << rx_data[k];
cout << endl;
bits[11]=rx_data[15];
bits[10]=rx_data[14];
bits[9]=rx_data[13];
bits[8]=rx_data[12];
bits[7]=rx_data[11];
bits[6]=rx_data[10];
bits[5]=rx_data[9];
bits[4]=rx_data[7];
bits[3]=rx_data[6];
bits[2]=rx_data[5];
bits[1]=rx_data[3];
cout << "\n \n The Received data withot redundant bit is: ";
for(k=11;k>0;k--)
cout << bits[k];
cout << endl;
double x=2;
double number=0;
for(k=11;k>0;k--){
double z=0;
z=pow(x, k-1);
double temp=0;
temp=bit[k]*z;
number=number+temp;
}
cout << "\n \n The ALPHABET entered was: " << one_char << endl;
}else{
if(alp==2){
int num,numb,err_bito,err_bitn;
int bit[]={0,0,0,0,0,0,0,0,0,0,0,0};
int bits[]={0,0,0,0,0,0,0,0,0,0,0,0};
cout << "\n \n THIS NUMERIC ERROR DETECTION AND CORRECTIONPROGRAM" << endl;
cout<<"\n \n*******************************************************************************";
cout<<"\n -:CAUTION:- ";
cout<<"\n \n SINCE THE PROGRAM HAS BEEN DESIGNED FOR 11BITARRAY,THE PROGRAM WILL NOT ACCEPT ANY VALUES GREATER THAN OREQUAL 2048";
cout<<"\n \n*******************************************************************************";
cout << "\n \n \n Enter any decimal number: ";
cin >> numb;
if(numb<2048)
num=numb;
else{
cout << "\n" << endl;
cout << "If u carry on u will get erroneous results" <<endl;
}
bit[1]=num%2;
int a;
a=num-num%2;
int b=a/2;
bit[2]=b%2;
a=b-b%2;
b=a/2;
bit[3]=b%2;
a=b-b%2;
b=a/2;
bit[4]=b%2;
a=b-b%2;
b=a/2;
bit[5]=b%2;
a=b-b%2;
b=a/2;
bit[6]=b%2;
a=b-b%2;
b=a/2;
bit[7]=b%2;
a=b-b%2;
b=a/2;
bit[8]=b%2;
a=b-b%2;
b=a/2;
bit[9]=b%2;
a=b-b%2;
b=a/2;
bit[10]=b%2;
a=b-b%2;
b=a/2;
bit[11]=b%2;
a=b-b%2;
b=a/2;
cout << "\n \n The equivalent binary data is:";
for( k=11;k>0;k--)
cout << bit[k];
cout << endl;
int r1,r2,r3,r4,r1o,r2o,r3o,r4o,r1n,r2n,r3n,r4n;
r1=r2=r3=r4=r1o=r2o=r3o=r4o=r1n=r2n=r3n=r4n=0;
if(bit[1]==1){
r1++;
r2++;
}
if(bit[2]==1){
r1++;
r3++;
}
if(bit[3]==1){
r2++;
r3++;
}
if(bit[4]==1){
r1++;
r2++;
r3++;
}
if(bit[5]==1){
r1++;
r4++;
}
if(bit[6]==1){
r2++;
r4++;
}
if(bit[7]==1){
r1++;
r2++;
r4++;
}
if(bit[8]==1){
r3++;
r4++;
}
if(bit[9]==1){
r1++;
r3++;
r4++;
}
if(bit[10]==1){
r2++;
r3++;
r4++;
}
if(bit[11]==1){
r1++;
r2++;
r3++;
r4++;
}
r1o=r1%2;
r2o=r2%2;
r3o=r3%2;
r4o=r4%2;
cout<<"\n \n The REDUNDENT BITS are: ";
cout << r1o << r2o << r3o << r4o << endl;
r1=r2=r3=r4=0;
int tx_data[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int rx_data[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
cout<<"\n \n Data with REDUNDANTS BITS are:";
tx_data[15]=bit[11];
cout<< tx_data[15];
tx_data[14]=bit[10];
cout<< tx_data[14];
tx_data[13]=bit[9];
cout<< tx_data[12];
tx_data[12]=bit[8];
cout<< tx_data[12];
tx_data[11]=bit[7];
cout<< tx_data[11];
tx_data[10]=bit[6];
cout<< tx_data[10];
tx_data[9]=bit[5];
cout<< tx_data[9];
tx_data[8]=r4o;
cout<<"("<< tx_data[8]<<")";
tx_data[7]=bit[4];
cout<< tx_data[7];
tx_data[6]=bit[3];
cout<< tx_data[6];
tx_data[5]=bit[2];
cout<< tx_data[5];
tx_data[4]=r3o;
cout<<"("<< tx_data[4]<<")";
tx_data[3]=bit[1];
cout<< tx_data[3];
tx_data[2]=r2o;
cout<<"("<< tx_data[2]<<")";
tx_data[1]=r1o;
cout<<"("<< tx_data[1]<<")";
cout<<endl;
cout << "\n \n The TRANSMITTED DATA is: ";
for(k=15;k>0;k--)
cout << tx_data[k];
cout << endl;
err_bito=((8*r4o)+(4*r3o)+(2*r2o)+(1*r1o)); // ERROR BIT GENERATED
for(k=15;k>0;k--)
rx_data[k]=tx_data[k];
if(rx_data[err_bito]==1)
rx_data[err_bito]=0;
else
rx_data[err_bito]=1;
cout << "\n \n The Received DATA WITH ERROR is:";
for(k=15;k>0;k--)
cout << rx_data[k];
cout << endl;
if(rx_data[3]==1){
r1++;
r2++;
}
if(rx_data[5]==1){
r1++;
r3++;
}
if(rx_data[6]==1){
r2++;
r3++;
}
if(rx_data[7]==1){
r1++;
r2++;
r3++;
}
if(rx_data[9]==1){
r1++;
r4++;
}
if(rx_data[10]==1){
r2++;
r4++;
}
if(rx_data[11]==1){
r1++;
r2++;
r4++;
}
if(rx_data[12]==1){
r3++;
r4++;
}
if(rx_data[13]==1){
r1++;
r3++;
r4++;
}
if(rx_data[14]==1){
r2++;
r3++;
r4++;
}
if(rx_data[15]==1){
r1++;
r2++;
r3++;
r4++;
}
r1n=r1%2;
r2n=r2%2;
r3n=r3%2;
r4n=r4%2;
r1=r2=r3=r4=0;
if(r1o==r1n){
if(r2o==r2n){
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n No Error" << endl;
else
cout << "\n \n Not Possible" << endl;
}else{
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=12;
cout << "\n \n Error in bit 12" << endl;
}
}
}else{
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=10;
cout << "\n \n Error in bit 10" << endl;
}
}else{
if(r4o==r4n){
err_bitn=6;
cout << "\n \n Error in bit 6" << endl;
}else{
err_bitn=14;
cout << "\n \n Error in bit 14" << endl;
}
}
}
}else{
if(r2o==r2n){
if(r3o==r3n){
if(r4o==r4n)
cout << "\n \n Not Possible" << endl;
else{
err_bitn=9;
cout << "\n \n Error in bit 9" << endl;
}
}else{
if(r4o==r4n){
err_bitn=5;
cout << "\n \n Error in bit 5" << endl;
}else{
err_bitn=13;
cout << "\n \n Error in bit 13" << endl;
}
}
}else{
if(r3o==r3n){
if(r4o==r4n){
err_bitn=3;
cout << "\n \n Error in bit 3" << endl;
}else{
err_bitn=11;
cout << "\n \n Error in bit 11" << endl;
}
}else{
if(r4o==r4n){
err_bitn=7;
cout << "\n \n Error in bit 7" << endl;
}else{
err_bitn=15;cout << "\n \n Error in bit 15" << endl;
}
}
}
}
if(rx_data[err_bitn]==1)
rx_data[err_bitn]=0;
else
rx_data[err_bitn]=1;
cout << "\n \n The CORRECTED DATA is: ";
for(k=15;k>0;k--)
cout << rx_data[k];
cout << endl;
bits[11]=rx_data[15];
bits[10]=rx_data[14];
bits[9]=rx_data[13];
bits[8]=rx_data[12];
bits[7]=rx_data[11];
bits[6]=rx_data[10];
bits[5]=rx_data[9];
bits[4]=rx_data[7];
bits[3]=rx_data[6];
bits[2]=rx_data[5];
bits[1]=rx_data[3];
cout << "\n \n The Recieved data without redundant bit is: ";
for(k=11;k>0;k--)
cout << bits[k];
cout << endl;
double x=2;
double number=0;
for(k=11;k>0;k--){
double z=0;
z=pow(x, k-1);
double temp=0;
temp=bit[k]*z;
number=number+temp;
}
cout << "\n \n The decimal number entered was:" << number << endl;
}else{
cout<<"You are quiting from the program";
}
}
}while(alp!=3);
return(0);
}