there are 2 parts ,don’t not forget complete the format of the programs are given,
Part1(ConvertProb) format of code:
/*
Number converter
Menu
Convert between integer, binary, octal and hexadecimal
This program should accept numeric values in hexadecimal,
decimal, octal and binary formats as:
Hex 0x0 to 0xFFFFFFFF
Dec 0 to 4294967295
Oct o0 to o37777777777
Bin b0 to b11111111111111111111111111111111
After a value is input the code in main will interpret the
data types above an process the conversion to an unsigned
int. The unsigned int will be used to convert the input to
strings containing hexadecimal, octal and binary strings.
*/
#include <stdio.h>
#include <string.h>
//int input_to_decimal(char *input);
unsigned int bin_to_uint(char *input);
unsigned int oct_to_uint(char *input);
unsigned int hex_to_uint(char *input);
unsigned int dec_to_uint(char *input);
void uint_to_hex(unsigned int n, char *output);
void uint_to_oct(unsigned int n, char *output);
void uint_to_bin(unsigned int n, char *output);
int error = 0;
int main(){
char input[50];
unsigned int n = 0;
char output[50];
// Write code here to test your functions
// Uncomment code below when done
/* printf(“Enter a binary, octal, decimal or hexadecimal numbern”);
printf(“convert > “);
gets(input);
// Detect input data type
// Hexadecimal
if(input[0] == ‘0’ && input[1] == ‘x’){
n = hex_to_uint(input);
}
// Decimal
else if(input[0] >= ‘0’ && input[0] <= ‘9’){
n = dec_to_uint(input);
}
// Octal
else if(input[0] == ‘o’){
n = oct_to_uint(input);
}
// Binary
else if(input[0] == ‘b’){
n = bin_to_uint(input);
}
// Unknown
else{
printf(“ERROR: Unknown data type: %sn”, input);
}
// Print results
printf(“The decimal value of %s is %un”, input, n);
uint_to_hex(n, output);
printf(“The hexadecimal value of %s is %sn”, input, output);
uint_to_oct(n, output);
printf(“The octal value of %s is %sn”, input, output);
uint_to_bin(n, output);
printf(“The binary value of %s is %sn”, input, output);
*/
return 0;
}
/*
This function converts the value part of the hex
string to an unsigned integer value. The first
two chars are 0x, which tells that the string is
in hex. Start processing the value at index 2 until
the null, calculating the int value as you would on
paper. Try on paper first.
*/
// Convert a hexadecimal char array to uint
unsigned int hex_to_uint(char *input){
// Declare result and set to zero
unsigned int res = 0;
// Declare and set multiplier to 1
// Declare iterator
// Loop through value part of input string
// If between 0 and 9 add 0 to 9 to res with multiplier
// If between A and F add 10 to 15 to res with multiplier
// Error – exit
// Advance multiplier to next position value
return res;
}
/*
Copy hex_to_uint() and modify for decimal input.
*/
// Convert a unsigned integer char array to uint
unsigned int dec_to_uint(char *input){
// Declare result and set to zero
unsigned int res = 0;
return res;
}
/*
Copy dec_to_uint() and modify for octal input.
*/
// Convert a octal char array to uint
unsigned int oct_to_uint(char *input){
// Declare result and set to zero
unsigned int res = 0;
return res;
}
/*
Copy oct_to_uint() and modify for binary input.
*/
// Convert a binary char array to unsigned int
unsigned int bin_to_uint(char *input){
// Declare result and set to zero
unsigned int res = 0;
return res;
}
/*
This function converts from unsigned int to a hex
char array. Try this on paper before coding.
*/
// Convert a unsigned integer char array to hexadecimal
void uint_to_hex(unsigned int n, char *output){
// Declare a uint for remainder
// Declare an int for division
// Declare a char array buffer
// Use a loop to generate a hex string – string will be reverse
// Get last hex char
// Put null at end of buffer
// Copy 0x to output string
// Copy chars from buffer in reverse order to output string
return;
}
/*
Copy uint_to_hex() and modify for octal
*/
// Convert a unsigned integer char array to octal
void uint_to_oct(unsigned int n, char *output){
return;
}
/*
Copy uint_to_oct() and modify for binary
*/
// Convert a unsigned integer char array to binary
void uint_to_bin(unsigned int n, char *output){
return;
}
Part2(SafeCalcProb) format of code:
/*
Safe integer calculator – warns if an overflow or
underflow error occurs.
Menu
Negation
Safe unsigned ops
Safe signed ops
Arithmetic without + – * / % ++ or —
Code the functions below and uncomment the code in main()
when completed.
Code the functions in order as they appear. Subsequent
functions depend on previous functions. You cannot use
any math operators (+ – * / % ++ or –) except simple
assignment (=). However, you may use relational and
logical operators.
The _add() function should only use bitwise operators. All
other functions can call functions necessary to complete the
required operation. I added some hints above functions.
*/
#include <stdio.h>
// Prototypes
int _add(int a, int b);
int add(int a, int b);
int sub(int a, int b);
int neg(int a);
int mul(int a, int b);
int div(int a, int b);
int mod(int a, int b);
int pow(int a, int b);
int convert(char *input);
// Main
int main(int argc, char *argv[]){
int res = 0; // Cumulative result – running total
int n = 0; // For number conversion from input string
char input[50]; // Input string
input[0] = ‘ ’; // Put null in operator char so loop works
// Write code here to test your functions
// Uncomment code below when done
// Loop until quit is selected
while(input[0] != ‘q’ && input[0] != ‘Q’){
// Show menu choices
menu();
// Print prompt with running total
printf(“nres = %d > “, res);
// Get input string
gets(input);
// Clear screen
system(“cls”);
// Switch on operator char input[0]
switch (input[0]){
case ‘+’:
res = add(res, convert(input));
break;
case ‘-‘:
res = sub(res, convert(input));
break;
case ‘*’:
res = mul(res, convert(input));
break;
case ‘/’:
res = div(res, convert(input));
break;
case ‘%’:
res = mod(res, convert(input));
break;
case ‘~’:
res = neg(res);
break;
case ‘^’:
res = pow(res, convert(input));
break;
case ‘c’:
case ‘C’:
res = 0;
break;
case ‘q’:
case ‘Q’:
printf(“Good-bye!n”);
break;
default:
printf(“Enter a valid operator and operandn”);
}
}
*/
return 0;
}
// Show menu choices
void menu(){
printf(“nSafe Integer Calculatorn”);
printf(“+ x to addn”);
printf(“- x to subtractn”);
printf(“* x to multiplyn”);
printf(“/ x to dividen”);
printf(“%% x to modulusn”);
printf(“~ x to negaten”);
printf(“^ x to raise by power xn”);
printf(“c x to clear resultn”);
printf(“q x to quitn”);
return;
}
/*
This function should only use bitwise operators and
relational operators
*/
// Add operation using only bitwise operators
int _add(int a, int b){
// Loop until b is zero
// Find carry 1 bits – a AND b assign to carry
// Find non carry 1 bits – a XOR b assign to a
// Multiply carry by 2 by shift and assign to b
return a;
}
/*
Safe add() should call _add() and check for both
overflow and underflow errors.
*/
// Safe add operation
int add(int a, int b){
// Declare int for result
int res = 0;
// Call to _add() a and b and assign to result
// Check for overflow – look at page 90 in book
// Check for underflow – look at page 90 in book
return res;
}
/*
Negate a by using a bitwise operator and safe add().
Look on page 95 in book.
Replace the zero with an expression that solves this.
*/
// Define negation with ~ and safe add
int neg(int a){
// Return negation of a and add 1
return 0; // Replace 0 with code
}
/*
Remember that subtraction is the same as addition
if you negate one of the operands.
Replace the zero with an expression that solves this.
*/
// Define safe subtract by safe add – negate b
int sub(int a, int b){
return 0; // Replace 0 with code
}
/*
Safe mul() uses an iterative call to safe add()
to calculate a product. Remember that
5 x 4 = 5 + 5 + 5 + 5 = 20
*/
// Define safe multiply by calling safe add b times
int mul(int a, int b){
// Declare and initialize cumulative result
int res = 0;
// Declare sign of product – initially assume positive
// For efficiency – smaller number should be multiplier
// Absolute value of a and flip sign
// Absolute value of b and flip sign
// Accumulate result
// Set sign to output
return res;
}
/*
Safe div() repeatedly subtracts b from a, counting the
number of subtractions until a < b, which it returns.
*/
// Define safe divide by calling safe subtract b times
int div(int a, int b){
// Declare int to count how many times can b be subtracted from a
int cnt = 0;
// Declare sign
// Absolute value of a and flip sign
// Absolute value of b and flip sign
// loop to calculate how many times can b be subtracted from a
// Set sign to output
return cnt;
}
/*
Safe mod() repeatedly subtracts b from a until a < b, returning a.
*/
// Define safe modulus by calling safe subtract
int mod(int a, int b){
// Absolute value of a
// Absolute value of b
// Find remainder by repeated subtraction a – b
return a;
}
/*
Safe pow() calculates as the math pow function but
only uses the safe operations.
res = n^exp
Loop until exp is zero
res = res * n
exp = exp – 1
Remember the special case for n^0
*/
// Define safe pow by calling safe multiply exp times
int pow(int n, int exp){
// Declare int for result of n^exp
int res = 0;
// Loop and multiply to calculate n^exp
return res;
}
/*
This function extracts the integer value from the input string.
If input = “+ -123”, res = -123.
If input = “* 987654”, res = 987654.
The best way to solve complicated problems is to work them out
on paper first.
*/
// Extract the integer from the input string and convert to int
int convert(char *input){
// Declare int for result extracted from input
int res = 0;
// Declare int for sign of result
// Declare two iterators
// Declare a buffer for numeric chars
// Set error to zero – no error found yet
// Check for space in element 1
// Check for negative integer at element 2
// Loop to copy all numeric chars to buffer
// i is iterator for input string and should start at first numeric char
// j is iterator for buffer where numeric chars are copied
// This must test for chars between 0 and 9
// i gets position of last numeric char in buffer
// j is now used for pow function – start at zero
// Construct integer from buffer using pow j increases and i decreases
// Set sign for output
return res;
}
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