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Will the following C code compile without any error?
#include <stdio.h>
int main()
{
for (int k = 0; k < 10; k++);
return 0;
}
int main()
{
for (int k = 0; k < 10; k++);
return 0;
}
- a)Yes
- b)No
- c)Depends on the C standard implemented by compilers
- d)Error
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Will the following C code compile without any error?#include <stdio...
Compilers implementing C90 do not allow this, but compilers implementing C99 allow it.
Output:
$ cc pgm4.c
pgm4.c: In function ‘main’:
pgm4.c:4: error: ‘for’ loop initial declarations are only allowed in C99 mode
pgm4.c:4: note: use option -std=c99 or -std=gnu99 to compile your code
Output:
$ cc pgm4.c
pgm4.c: In function ‘main’:
pgm4.c:4: error: ‘for’ loop initial declarations are only allowed in C99 mode
pgm4.c:4: note: use option -std=c99 or -std=gnu99 to compile your code
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Community Answer
Will the following C code compile without any error?#include <stdio...
Explanation:
C Syntax:
- The given C code contains a for loop which is used to iterate a specific number of times.
- The for loop syntax is:
for (initialization; condition; update) {
// code to be executed
}
Issue in the Code:
- In the given code snippet, there is a semicolon (`;`) at the end of the for loop statement, right after the closing parenthesis of the loop. This semicolon acts as the loop body, making the loop empty.
- This means that the loop does not have any code block associated with it, and the `return 0;` statement is outside the loop.
- This will cause the loop to run 10 times with an empty body, and then the program will exit after the loop without doing anything inside the loop.
Compilation:
- Depending on the C standard implemented by different compilers, this code may compile without any error or warning.
- Some compilers might give a warning about the empty body of the loop, but it will not be considered a syntax error.
Therefore, the correct answer is option C.
C Syntax:
- The given C code contains a for loop which is used to iterate a specific number of times.
- The for loop syntax is:
for (initialization; condition; update) {
// code to be executed
}
Issue in the Code:
- In the given code snippet, there is a semicolon (`;`) at the end of the for loop statement, right after the closing parenthesis of the loop. This semicolon acts as the loop body, making the loop empty.
- This means that the loop does not have any code block associated with it, and the `return 0;` statement is outside the loop.
- This will cause the loop to run 10 times with an empty body, and then the program will exit after the loop without doing anything inside the loop.
Compilation:
- Depending on the C standard implemented by different compilers, this code may compile without any error or warning.
- Some compilers might give a warning about the empty body of the loop, but it will not be considered a syntax error.
Therefore, the correct answer is option C.
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Will the following C code compile without any error?#include <stdio.h> int main() { for (int k = 0; k < 10; k++); return 0; }a)Yesb)Noc)Depends on the C standard implemented by compilersd)ErrorCorrect answer is option 'C'. Can you explain this answer?
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