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C Programming Exercises

C Programming Exercises, Practice, Solution : Variable Type

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C Variable Type [18 exercises with solution]

1. Write a C program which will invoke the command processor to execute a command. Go to the editor

Expected Output :

Is command processor available?                                         
Command processor available!                                            
Executing command DIR                                                   
00c40280-5e27-11e6-bd4f-71e8825f8ea3                                    
01691610-41e1-11e6-901d-35b72ececc72                                    
...........
ff827330-443a-11e6-9820-23e2f60d924e                                    
file.txt                                                                
logging_example.out                                                     
test.txt                                                                
Returned value is: 0.

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2. Write a C program to convert a string to an unsigned long integer. Go to the editor

Test Data and Expected Output :

Input an unsigned number: 25                                            
Output: 25

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3. Write a C program to convert a string to a long integer. Go to the editor

Expected Output :

In decimals: 2016, 4235440, -3624422, 5947391.

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4. Write a C program to convert a string to a double. Go to the editor

Expected Output :

Output= 4.00

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5. Write a C program to generate a random number. Go to the editor

Test Data and Expected Output :

Guess the number (1 to 10): 6                                           
The number is higher                                                    
                                                                        
Guess the number (1 to 10): 7                                           
That is correct!              

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6. Write a C program to sort the elements of an array. Go to the editor

Test Data and Expected Output :

Input the number of elements to be stored in the array :5               
Input 6 elements in the array :                                         
element - 0 : 15                                                        
element - 1 : 26                                                        
element - 2 : 42                                                        
element - 3 : 82                                                        
element - 4 : 35                                                        
                                                                        
After sorting the array are :                                           
15                                                                      
26                                                                      
35                                                                      
42                                                                      
82                    

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7. Write a C program to integral quotient and remainder of a division. Go to the editor

Test Data and Expected Output :

Input numerator : 2500                                                 
 Input denominator : 235                                                
 quotient =  10, remainder = 150                                                                  

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8. Write a C program to return the absolute value of a long integer. Go to the editor

Test Data and Expected Output :

Input 1st number (positive or negative) : 25                           
 Input 2nd number (positive or negative) : -125                         
 The absolute value of 1st number is : 25                                           
 The absolute value of 2nd number is : 125           

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9. Write a C program to get the environment string. Go to the editor

Expected Output :

The set path is: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin
:/bin:/usr/games:/usr/local/games           

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10. Write a C program to return the quotient and remainder of a division. Go to the editor

Test Data and Expected Output :

Input numerator : 2000                                                 
 Input denominator : 235                                                
 quotient =  8, remainder = 120.          

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11. Write a C program to allocate a block of memory for an array. Go to the editor

Test Data and Expected Output :

Input the number of elements to be stored in the array :5               
Input 5 elements in the array :                                         
 element 1 : 25                                                         
 element 2 : 30                                                         
 element 3 : 35                                                         
 element 4 : 20                                                         
 element 5 : 40                                                         
 Values entered in the array are :                                      
 25  30  35  20  40           

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12. Write a C program to perform a binary search in an array. Go to the editor

Test Data and Expected Output :

Input the number of elements to be stored in the array :5               
Input 5 elements in the array :                                         
element - 1 : 25                                                        
element - 2 : 20                                                        
element - 3 : 18                                                        
element - 4 : 13                                                        
element - 5 : 15                                                        
 Input a value to search : 18                                           
18 is found in the array.          

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13. Write a C program to convert a string to an integer. Go to the editor

Test Data and Expected Output :

Input a number : 1972                                                   
The value Input is 1972.

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14. Write a C program to convert a string to a double. Go to the editor

Test Data and Expected Output :

Input a number : 25                                                                                          
 The original number is : 25.000000                                                                           
 After division by 2 the number is : 12.500000 

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15. Write a C program to set a function that will be executed on termination of a program. Go to the editor

Expected Output :

This is the message from main function.                                
 Here is the message returning from newFunctionTwo.                     
 Here is the message returning from newFunctionOne.

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16. Write a C program to return the absolute value of an integer. Go to the editor

Test Data and Expected Output :

Input a positive or negative number :-25                               
 The absolute value of the given number is : 25

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17. Write a C program to abort the current process. Go to the editor

Expected Output :

 File does not exist or error, in opening the file.                                                           
timeout: the monitored command dumped core                                                                    
Aborted  

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18. Write a C program to demonstrate the working of keyword long. Go to the editor

Expected Output :

 The size of int = 4 bytes                                                           
 The size of long = 8 bytes                                                          
 The size of long long = 8 bytes                                                     
 The size of double = 8 bytes                                                        
 The size of long double = 16 byte 

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#include <stdio.h> 
 int main()  
  {

  }

List of Exercises with Solutions :



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