Write C expressions that evaluate to 1 when the following conditions are true and to 0 when they are false. Assume x is of type
int. Any bit of x equals 1. Any bit of x equals 0. Any bit in the least significant byte of x equals 1. Any bit in the most significant byte of x equals 0. Your code should follow the bit-level integer coding rules (page 128), with the additional restriction that you may not use equality (==) or inequality (!=) tests.
1 answer:
Answer:
Check the explanation
Explanation:
#include <stdio.h>
#include <stdlib.h>
//function to print a message
static void printMessage(char *msg)
{
printf("%s\n", msg);
}
//perform option A
int perform_A(int x)
{
//return true if any bit of x is equal to 1
return !!x;
}
//perform option A
int perform_B(int x)
{
//return true if any bit of x is equal to 0
return !x;
}
//perform option C
int perform_C(int x)
{
//return true if least significant bit is 1
return !!(x & 0xFF);
}
//perform option D
int perform_D(int x)
{
//return true if most significant bit is 0
return !!(~x & 0xFF);
}
//the main function
int main(void)
{
//set the integer
int input = sizeof(int) << 3;
//declare the test values
int onebitis1 = ~0;
int onebitis0 = 0;
int onebitLeast1 = 0xFF;
int onebitMost0 = 0xFF << (input - 8);
(perform_A(onebitis1)) && (printf("A return True\n"));
(perform_B(onebitis0)) && (printf("B returns True\12"));
(perform_C(onebitLeast1)) && (printf("C returns True\n"));
(perform_D(onebitMost0)) && (printf("D returns True\n"));
//to wait for a key press
getchar();
return 0;
}
Kindly check the attached image below to see the output.
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Answer:
Step by step explanation along with code and output is provided below
Explanation:
#include<iostream>
using namespace std;
// print_seconds function that takes three input arguments hours, mints, and seconds. There are 60*60=3600 seconds in one hour and 60 seconds in a minute. Total seconds will be addition of these three
void print_seconds(int hours, int mints, int seconds)
{
int total_seconds= hours*3600 + mints*60 + seconds;
cout<<"Total seconds are: "<<total_seconds<<endl;
}
// test code
// user inputs hours, minutes and seconds and can also leave any of them by entering 0 that will not effect the program. Then function print_seconds is called to calculate and print the total seconds.
int main()
{
int h,m,s;
cout<<"enter hours if any or enter 0"<<endl;
cin>>h;
cout<<"enter mints if any or enter 0"<<endl;
cin>>m;
cout<<"enter seconds if any or enter 0"<<endl;
cin>>s;
print_seconds(h,m,s);
return 0;
}
Output:
enter hours if any or enter 0
2
enter mints if any or enter 0
25
enter seconds if any or enter 0
10
Total seconds are: 8710
