I am very new into programming and have a problem with the scanf. I have to write a program with a structured output but I really don't know how I can read this scanf without changing the output. It's German language used in the output so I have to explain that I'm writing a calculator with bitwise operators and got the hint that I should use the getNumber function but I haven't found anything to understand how it works.
The first scanf should read the input which is the first number in the calculator while the second scanf should be nothing more than only some bit operators so I declared them in the main function.
Here is my code if it helps:
#include <stdio.h>
#include "escapesequenzen.h"
void dummy(){
char Dummy;
do
scanf("%c", &Dummy);
while(Dummy != '\n');
}
/*
Block zum Kopieren:
printf(
"\n|----------------------------------------------------------|"
"\n| Bitoperatoren-Rechner |"
"\n| |"
"\n| Eingabe Zahl 1: |"
"\n| Operator: |"
"\n| Eingabe Zahl 2: |"
"\n| |"
"\n|----------------------------------------------------------|"
"\n| |"
"\n| | dez. | okt. | hex. | Binaerdarstellung |"
"\n| Zahl 1 | | | | |"
"\n| Operator | | | | |"
"\n| Zahl 2 | | | | |"
"\n| -------------------------------------------------------- |"
"\n| Ergebnis | | | | |"
"\n| |"
"\n|----------------------------------------------------------|");
*/
void print1(short Zahl1, short Zahl2, int Eingabe, char Dummy){
printf(
"\n|----------------------------------------------------------|"
"\n| Bitoperatoren-Rechner |"
"\n| |"
"\n| Eingabe Zahl 1: |"
"\n| Operator: |"
"\n| Eingabe Zahl 2: |"
"\n| |"
"\n|----------------------------------------------------------|"
"\n| |"
"\n| | dez. | okt. | hex. | Binaerdarstellung |"
"\n| Zahl 1 | | | | |"
"\n| Operator | | | | |"
"\n| Zahl 2 | | | | |"
"\n| -------------------------------------------------------- |"
"\n| Ergebnis | | | | |"
"\n| |"
"\n|----------------------------------------------------------|");
}
int main(){
short Zahl1;
short Zahl2;
int Eingabe;
short Operator;
char Dummy;
print1(Zahl1, Zahl2, Eingabe, Operator, Dummy);
getNumber();
return 0;
}
Edit: If it helps, here is the "escapesequenzen" heather:
#ifndef escapesequenzen_h
#define escapesequenzen_h escapesequenzen_h
#define POSITION(Ze, Sp) printf("\033[%d;%dH",Ze,Sp)
#define HOME printf("\033[H")
#define UP(Anz) printf("\033[%dA",Anz)
#define UP_LINE printf("\033[A")
#define DOWN(Anz) printf("\033[%dB",Anz)
#define DOWN_LINE printf("\033[B")
#define RIGHT(Anz) printf("\033[%dC",Anz)
#define ONE_POS_RIGHT printf("\033[C")
#define LEFT(Anz) printf("\033[%dD",Anz)
#define ONE_POS_LEFT printf("\033[D")
#define STORE_POS printf("\033[s")
#define RESTORE_POS printf("\033[u")
#define ACT_POS printf("\033[6n")
#define CLEAR printf("\033[2J")
#define CLEAR_LINE printf("\033[K")
#define ATTRIBUTE_OFF printf("\033[0m")
#define BOLD printf("\033[1m")
#define UNDERSCORE printf("\033[4m")
#define BLINK printf("\033[5m")
#define INVERSE printf("\033[7m")
#define INVISIBLE printf("\033[8m")
#define FORECOLOR_BLACK printf("\033[30m")
#define FORECOLOR_RED printf("\033[31m")
#define FORECOLOR_GREEN printf("\033[32m")
#define FORECOLOR_YELLOW printf("\033[33m")
#define FORECOLOR_BLUE printf("\033[34m")
#define FORECOLOR_VIOLETT printf("\033[35m")
#define FORECOLOR_KOBALT printf("\033[36m")
#define FORECOLOR_WHITE printf("\033[37m")
#define BACKCOLOR_BLACK printf("\033[40m")
#define BACKCOLOR_RED printf("\033[41m")
#define BACKCOLOR_GREEN printf("\033[42m")
#define BACKCOLOR_YELLOW printf("\033[43m")
#define BACKCOLOR_BLUE printf("\033[44m")
#define BACKCOLOR_VIOLETT printf("\033[45m")
#define BACKCOLOR_KOBALT printf("\033[46m")
#define BACKCOLOR_WHITE printf("\033[47m")
#define TEXT_BW_25_40 printf("\033[=0h")
#define TEXT_COLOR_25_40 printf("\033[=1h")
#define TEXT_BW_25_80 printf("\033[=2h")
#define TEXT_COLOR_25_80 printf("\033[=3h")
#define GRAFIC_COLOR_320_200 printf("\033[=4h")
#define GRAFIC_BW_320_200 printf("\033[=5h")
#define GRAFIC_BW_640_200 printf("\033[=6h")
#define WRAP_MODE_ON printf("\033[=7h")
#define WRAP_MODE_OFF printf("\033[=7l")
#endif
I am not familiar with the "getNumber" function, but here is one possible method of using the "scanf" function to input the two integers and a one-character operator (e.g. "+", "-", "*", or "/") following is an updated version of your program code for your consideration and experimentation.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
Block zum Kopieren:
printf(
"\n|----------------------------------------------------------|"
"\n| Bitoperatoren-Rechner |"
"\n| |"
"\n| Eingabe Zahl 1: |"
"\n| Operator: |"
"\n| Eingabe Zahl 2: |"
"\n| |"
"\n|----------------------------------------------------------|"
"\n| |"
"\n| | dez. | okt. | hex. | Binaerdarstellung |"
"\n| Zahl 1 | | | | |"
"\n| Operator | | | | |"
"\n| Zahl 2 | | | | |"
"\n| -------------------------------------------------------- |"
"\n| Ergebnis | | | | |"
"\n| |"
"\n|----------------------------------------------------------|");
*/
void print1(short Zahl1, short Zahl2, char* Oper)
{
char Zahl_okt1[6], Zahl_okt2[6], Zahl_hex1[16], Zahl_hex2[16], Er_okt[6], Er_hex[16];
int Ergebnis = 0;
if ((strcmp(Oper, "+")) == 0)
Ergebnis = Zahl1 + Zahl2;
if ((strcmp(Oper, "-")) == 0)
Ergebnis = Zahl1 - Zahl2;
if ((strcmp(Oper, "*")) == 0)
Ergebnis = Zahl1 * Zahl2;
if ((strcmp(Oper, "/")) == 0)
Ergebnis = Zahl1 / Zahl2; /* This will be an integer result as is */
sprintf(Zahl_okt1, "%o", Zahl1); /* To get the octal equivalent */
sprintf(Zahl_okt2, "%o", Zahl2);
sprintf(Er_okt, "%o", Ergebnis);
sprintf(Zahl_hex1, "%02x", Zahl1); /* To get the hexadecimal equivalent */
sprintf(Zahl_hex2, "%02x", Zahl2);
sprintf(Er_hex, "%08x", Ergebnis);
/* You will probably need to search for a good decimal to binary conversion function. */
/* I did not spend any time looking for one.*/
printf(
"\n|----------------------------------------------------------|"
"\n| Bitoperatoren-Rechner |"
"\n| |"
"\n| Eingabe Zahl 1: %8d |"
"\n| Operator......: %s |"
"\n| Eingabe Zahl 2: %8d |"
"\n| |"
"\n|----------------------------------------------------------|"
"\n| |"
"\n| | dez. | okt. | hex. | Binaerdarstellung |"
"\n| Zahl 1 |%8d |%8s|%8s| |"
"\n| Operator | %s | | | |"
"\n| Zahl 2 |%8d |%8s|%8s| |"
"\n| ---------------------------------------------------------|"
"\n| Ergebnis |%8d |%8s|%8s| |"
"\n| |"
"\n|----------------------------------------------------------|\n\n",
Zahl1, Oper, Zahl2, Zahl1, Zahl_okt1, Zahl_hex1, Oper, Zahl2, Zahl_okt2, Zahl_hex2, Ergebnis, Er_okt, Er_hex);
}
int main()
{
short Zahl1;
short Zahl2;
char Operator[16];
printf("Geben Sie Variable 1 ein: "); /* Sorry if my German is rusty */
scanf("%hu", &Zahl1);
printf("\nGeben Sie Variable 2 ein: ");
scanf("%hu", &Zahl2);
printf("\nGeben Sie den Betreiber ein ( + - * /): ");
scanf("%s", Operator);
printf("\n\n"); /* Just to keep things looking clean */
print1(Zahl1, Zahl2, Operator);
return 0;
}
In testing this code out here is a sample of the input and output on my terminal (I requested 55 * 84).
Geben Sie Variable 1 ein: 55
Geben Sie Variable 2 ein: 84
Geben Sie den Betreiber ein ( + - * /): *
|----------------------------------------------------------|
| Bitoperatoren-Rechner |
| |
| Eingabe Zahl 1: 55 |
| Operator......: * |
| Eingabe Zahl 2: 84 |
| |
|----------------------------------------------------------|
| |
| | dez. | okt. | hex. | Binaerdarstellung |
| Zahl 1 | 55 | 67| 37| |
| Operator | * | | | |
| Zahl 2 | 84 | 124| 54| |
| ---------------------------------------------------------|
| Ergebnis | 4620 | 11014|0000120c| |
| |
|----------------------------------------------------------|
When using the "scanf" function, it is usually proceeded by a "printf" function that prompts the user as to what type of data should be entered. Also, I included the "<string.h>" file reference in order to utilize various string functionality such as the "sprintf" function.
I hope that provides you with some ideas and helps you progress.
Regards.