Programming Forums > Application Development > C++

Nellie · Jun 8th, 2005, 1:01 PM

I need now to be able to convert a ascii character into a binary value.

char chr;
int numchar;
numchar = (int)chr;

gives me the decimal ASCII value, i need to then convert the decimal value to binary.

any ideas???

mitakeet · Jun 8th, 2005, 1:11 PM

ALL data stored in the machine is in binary, every bit of it (well, at least on almost all modern machines), everything else is just interpretation. Tomato, tomahto.

Nellie · Jun 8th, 2005, 1:27 PM

Quote:

Originally Posted by mitakeet

ALL data stored in the machine is in binary

i need to put the binary value of the int into a edit box on a dialog.

mitakeet · Jun 8th, 2005, 1:38 PM

Then you need to convert the binary representation into a string and display the string. This should get you started:

(Toggle Plain Text)

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>

void printBits(unsigned long val){
    int i, end = sizeof(unsigned long) * 8;
    unsigned long tmp = (ULONG_MAX / 2) + 1;
    for (i=0; i<end; i++){
        if (tmp & val) putc('1', stdout);
        else putc('0', stdout);
        tmp >>= 1;
    }
}

int main(){
    int number;
    char buf[BUFSIZ];

    while (1){
        printf("Please enter a number to convert to binary: ");
        fgets(buf, BUFSIZ, stdin);
        rewind(stdin);
        number = atoi(buf);
        printBits(number);
        printf("\n");;
    }
    return 0;
}

Nellie · Jun 8th, 2005, 1:39 PM

i'll give it a go

Jun 8th, 2005, 1:01 PM	#1
Nellie Programmer Join Date: Jun 2005 Location: Kent (old) England Posts: 34 Rep Power: 0	binary and ascii I need now to be able to convert a ascii character into a binary value. (Toggle Plain Text) char chr; int numchar; numchar = (int)chr; char chr; int numchar; numchar = (int)chr; gives me the decimal ASCII value, i need to then convert the decimal value to binary. any ideas??? __________________ I use MSVC6.0, on XP Pro Happy Programming :D http://www.danasoft.com/sig/NelliesSig.jpg

Jun 8th, 2005, 1:11 PM	#2
mitakeet Programmer Join Date: Jun 2005 Location: Maryland, USA Posts: 59 Rep Power: 4	ALL data stored in the machine is in binary, every bit of it (well, at least on almost all modern machines), everything else is just interpretation. Tomato, tomahto. __________________ Free code: http://sol-biotech.com/code/. It is not that old programmers are any smarter or code better, it is just that they have made the same stupid mistake so many times that it is second nature to fix it. --Mitakeet The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man. --George Bernard Shaw

Jun 8th, 2005, 1:38 PM	#4
mitakeet Programmer Join Date: Jun 2005 Location: Maryland, USA Posts: 59 Rep Power: 4	Then you need to convert the binary representation into a string and display the string. This should get you started: (Toggle Plain Text) #include <stdio.h> #include <stdlib.h> #include <limits.h> void printBits(unsigned long val){ int i, end = sizeof(unsigned long) * 8; unsigned long tmp = (ULONG_MAX / 2) + 1; for (i=0; i<end; i++){ if (tmp & val) putc('1', stdout); else putc('0', stdout); tmp >>= 1; } } int main(){ int number; char buf[BUFSIZ]; while (1){ printf("Please enter a number to convert to binary: "); fgets(buf, BUFSIZ, stdin); rewind(stdin); number = atoi(buf); printBits(number); printf("\n");; } return 0; } #include <stdio.h> #include <stdlib.h> #include <limits.h> void printBits(unsigned long val){ int i, end = sizeof(unsigned long) * 8; unsigned long tmp = (ULONG_MAX / 2) + 1; for (i=0; i<end; i++){ if (tmp & val) putc('1', stdout); else putc('0', stdout); tmp >>= 1; } } int main(){ int number; char buf[BUFSIZ]; while (1){ printf("Please enter a number to convert to binary: "); fgets(buf, BUFSIZ, stdin); rewind(stdin); number = atoi(buf); printBits(number); printf("\n");; } return 0; } __________________ Free code: http://sol-biotech.com/code/. It is not that old programmers are any smarter or code better, it is just that they have made the same stupid mistake so many times that it is second nature to fix it. --Mitakeet The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man. --George Bernard Shaw

Jun 8th, 2005, 1:39 PM	#5
Nellie Programmer Join Date: Jun 2005 Location: Kent (old) England Posts: 34 Rep Power: 0	i'll give it a go __________________ I use MSVC6.0, on XP Pro Happy Programming :D http://www.danasoft.com/sig/NelliesSig.jpg

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Programming Forums > Application Development > C++

binary and ascii