I try This code
#include <stdio.h>
int main() {
int testInteger;
printf("Enter an integer: \n");
scanf("%d", &testInteger);
return 0;
}
But in Netbeans, I can't Run this code because It only blank output
Like this
I have same err in VS code but I fix it with run in terminal
Can you help me
This problem is about Netbean's internal terminal/console section. The internal console is not able to run scanf function. So use an external terminal for your project. To do this:
first right click on your project, and select properties.
In that window select "Run" tab at the bottom.
in there, there is "Console Type", change this console type from "internal terminal" to "external terminal".
That is all.
try this code
Add a space in scanf
#include <stdio.h>
int main() {
int testInteger;
printf("Enter an integer: \n");
scanf(" %d", &testInteger);
return 0;
}
Related
This code runs perfectly in my IDE; I even tried it in an online compiler just to be sure, but when I try to open the .exe it will only ask for the integer and automatically close. I tried it with another program from the school where I asked for like 15 numbers but right before a goodbye message it just closes. Any idea how to fix cmd?
#include <stdio.h>
int main()
{
int numberOfWidgets;
printf("Give me a number: ");
scanf("%d", &numberOfWidgets);
printf("You choose the number: %d", numberOfWidgets);
return 0;
}
You need to add two lines to the end of your program:
int main() {
...
getchar();
getchar();
return 0;
}
The first call to getchar will clear the return key you pressed when you entered the number, the second one will stop and wait for a key to be pressed.
That way, your program will not exit until you press a key, and you will be able to read the output.
I have installed the MinGW and added the binary folder to the path in system variables. When I just print "Hello world", It prints normally on the screen. But when I try to get user input using scanf() (example given below), it compiles, but when I try to run it, it says "access is denied". Can someone please help me with this?
#include<stdio.h>
int main(void){
int num = 0;
printf("enter a number: ");
scanf("%d", &num);
printf("%d", num * 2);
return 0;
}
Thanks for the support. I finally figured it out. It was the antivirus software blocking the execution of the code. When I uninstalled it, the code ran perfectly.
I can't properly run/debug my code in VS Code using the C language. I've installed C/C++ package on VSC, Mingw & applied the path for Mingw. All my files are running .c format as well.
Only the last part of my code keeps crashing in VSC, when I run this same code on website compilers, it works!
Here is my code:
#include <stdio.h>
int main(void) {
int num1;
int num2;
printf("Enter a number: ");
scanf("%d", &num1);
printf("Enter another number: ");
scanf("%d", &num2);
printf("Answer: %d ", num1 + num2);
return 0;
}
That last printf is where VSC just shuts down the output window, so I never get to see the end result of my code. Anyone have any solutions to fix this? It'd be greatly appreciated!
When you run your console program from Visual Studio, it opens a terminal window, runs the program and the terminal window closes automatically when the program exits. This is a classic problem with the Microsoft Windows platform that they do not seem to care about despite millions of newbie programmers like you experiencing the same problem.
If you open the terminal window yourself, by running the CMD command from the start menu, you will be able to run your program manually after changing the current directory to that of the program binary.
To prevent the terminal window from closing immediately when running directly from Visual Studio, you should add 2 getchar(); statements before returning from main() to wait for user input and get a chance to see the output. Just reading a single byte with getchar() will not suffice because it will just read the pending newline entered by the user in response to the second prompt.
Also note that it is preferable to output a trailing newline to ensure the output is properly flushed on some legacy systems:
printf("Answer: %d\n", num1 + num2);
Here is a modified program you can test:
#include <stdio.h>
int main(void) {
int num1 = 0, num2 = 0;
printf("Enter a number: ");
scanf("%d", &num1);
printf("Enter another number: ");
scanf("%d", &num2);
printf("Answer: %d\n", num1 + num2);
getchar(); // read the pending newline
getchar(); // read at least another byte from the user.
return 0;
}
run you program from the console:
In the search box type cmd
cd \path_to_your_executable
run your program.
I'm new to the programming world, recently I began my programming path with C, and because of that I made a program that determines if a number is whether perfect or not. I use Code::Blocks IDE, and it works just fine, the problem is when I click the option "Build and run", the IDE executes the program and works perfectly, but when I select the .exe file from my desktop, it opens up, but doesn't show any output, the window just closes suddenly. Does someone have any idea on how to solve this issue?
Code:
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
int main() {
int N;
int j;
int Sum = 0;
printf("Input a number.\n");
scanf("%d",&N);
for (j = 1; j < N; j++)
{
if (N%j==0)
{
Sum+=j;
}
}
if (Sum==N)
{
printf("The number is perfect.\n");
} else {
printf("The number is not perfect.\n");
}
return 0;
}
Running program with Code::Blocks Build and run option
The only part of the Desktop located .exe that I can reach
If someone can suggest a solution, I will be very thankful!
As it was said, the program exits immediatly after it's completion. If you want to run the program, executing it by double click, you can place a pause condition in the program, for instance if you put getchar(); just before the return 0; statement, it will only exit after it receives an input from the keyboard, that is after you enter a key.
In the following simple program after the user inputs an integer the command line remains a flashing prompt. When I exit the program the answer is then printed out. Why is this and how can I fix it?
//powers of 2
#include <stdio.h>
int main(void){
int a,b=1,i;
printf("What power of 2?\n");
scanf("%i\n",&a);
for (i=0; i<a;i++)
{
b=b*2;
}
printf("the answer is: %i\n",b);
return 0;
}
Try remove the \n in your scan :
scanf("%i",&a);
Remove \n from scanf. After that I compiled your program and it worked properly.