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Title Program to convert decimal no. to binary ,gray code & its
Author Vipin Gupta
Author Email vipin18gupta [at] yahoo.co.in
Description It is an program to convert an decimal no. entered by the user into its equivalent binary no.,gray code& excess3 code useful in the microelectronics.
Category C++ » Beginners / Lab Assignments
Hits 375543
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Code : /* Program to convert decimal no. to its equivalent binary ,gray code & excess3 code Author:Vipin Gupta EMail:vipin18gupta@yahoo.com */ #include<iostream.h> #include<conio.h> int deci,bits=0,deci_x3,bits_x3; int array[100][20]; int array1[100][20]; int array2[100][20]; void binary(int [100][20],int,int,int); void gray(int); void display(int); int find_bits(int); void main() { textcolor(GREEN); textbackground(BLUE); clrscr(); cout<<"Enter the no. upto which gray code and excess 3 code is to be generated : "; cin>>deci; bits=find_bits(deci); deci_x3=deci+3; bits_x3=find_bits(deci_x3); for(int i2=0;i2<=deci;i2++) { for(int j2=0;j2<=bits;j2++) { array[i2][j2]=0; array1[i2][j2]=0; } } array2[0][bits_x3-1]=1; array2[0][bits_x3-2]=1; for( i2=1;i2<=deci_x3;i2++) { for(int j2=0;j2<=bits_x3;j2++) { array2[i2][j2]=0; } } cout<<" DECI NO. BINARY EQ. GRAY CODE EXCESS 3"; cout<<endl<<"------------------------------------------------------------- --"; display(0); getch(); for(int i=1;i<=deci;i++) { binary(array,i,bits,0); gray(i); binary(array2,i,bits_x3,1); display(i); getch(); } } void binary(int array_bin[20][20],int i,int bits2,int flag) { int ix; if(flag==1) ix=i+3; else ix=i; array_bin[i][bits2-1]=(array_bin[i-1][bits2-1]==0?1:0); for(int k1=2,i1=2;k1<=bits2;k1++,i1*=2) { if((ix/i1)%2==0) array_bin[i][bits2-k1]=0; else array_bin[i][bits2-k1]=1; } } void gray(int i) { //FIXING THE HIGHEST ORDER BIT FIRST array1[i][0]=array[i][0]; for(int j=1;j<bits;j++) { if((array[i][j-1]==0&&array[i][j]==0)||(array[i][j-1]==1&&array[i][j]==1)) array1[i][j]=0; else array1[i][j]=1; } } void display(int m) { cout<<endl; if(m<=9) cout<<" "<<m<<" " ; else cout<<" "<<m<<" " ; for(int j=0;j<bits;j++) cout<<array[m][j]; cout<<" " ; for( j=0;j<bits;j++) cout<<array1[m][j]; cout<<" "; for( j=0;j<bits_x3;j++) cout<<array2[m][j]; } int find_bits(int m) { int k,bits1=0; do { bits1++; k=1; for(int i=1;i<=bits1;i++) k=k*2; } while(k<=m); return(bits1); }

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