Question

Identify and correct the errors in each of the following [Note: There may be more than one error in each piece of code]:

a) if ( age >= 65 );  

printf( "Age is greater than or equal to 65\n" );

else

printf( "Age is less than 65\n" );

b) int x = 1, total;

    while ( x <= 10 )

               {

              total += x;

                ++x;

           }

c) While ( x <= 100 )

total += x;

++x;

Answer 1

Correct code with explanation and error is given below for part a,b and c:

Answer a)

Error:

1. (age variable is undeclared and undefined)

2. ";" after if condition

Correct Code:

#include <stdio.h>

int main()
{
//age variable is undeclared and undefined
//declared age
int age=23;
  
//there should not be ; after the condition of if statement
if ( age >= 65 )
printf( "Age is greater than or equal to 65\n" );
else
printf( "Age is less than 65\n" );
return 0;
}

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Screenshot of code executed successfully and its output:

'

C (Goc 6.3) Hinclude <stdio.h> 1 2 3 4- 5 6 7 int main() //age variable is undeclared and undefined //declared age int age-23; 00 - 9 10 11 12 13 14 15 //there should not be ; after the condition of if statement if ( age >= 65 ) printf( "Age is greater than or equal to 65\n"); else printf( "Age is less than 65\n"); return ; } 14:1 Open File Status Successfully executed Date 2020-06-16 10:18:44 Time OS Output Age is less than 65

Answer b) There is no error in the given piece of code for part b)

#include <stdio.h>

int main()
{
int x = 1, total;
while ( x <= 10 ){
total += x;
++x;
}
}

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Screenshot of code executed successfully:

C (Goc 6.3) 1 #include <stdio.h> 1 2 3 4- 5 int main() int x = 1, total; while ( x <= 10 ){ total = x; 7 8 9 10 } 9:1 Open File Custom Input Run Status Successfully executed Date 2020-06-16 10:28:36 Time 0 sec Mem 9.288 kB X

Answer c)

Error:

1. variable x and total is not declared and defined
2. W should be small in while statement.
3. There should be open and close bracket {} because there is more than one statement in while loop

Correct Code:

#include <stdio.h>

int main()
{
//variable x and total is not declared and defined
int x = 1, total;
  
//W should be small in while statement
//there should be open and close bracket {}
//since there is more than one statement in while loop
while ( x <= 10 ) {
total += x;
++x;
}
}

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Screenshot of code executed successfully and its output:

C (Goc 6.3) Hinclude <stdio.h> 1 2. 3 int main() //variable x and total is not declared and defined int x = 1, total; 5 6 7 8 9 10 11 12 13 14 15 16 17 18 //W should be small in while statement //there should be open and close bracket {} //since there is more than one statement in while loop while ( x <= 10 ) { total += x; } } 17:0 Open File Custom Input Run Status Successfully executed Date 2020-06-16 10:37:01 Time 0 sec Mem 9.288 kB X