C Programming - Control Instructions - Discussion
Discussion Forum : Control Instructions - Point Out Correct Statements (Q.No. 7)
7.
Which of the following sentences are correct about a for loop in a C program?
| 1: | for loop works faster than a while loop. |
| 2: | All things that can be done using a for loop can also be done using a while loop. |
| 3: | for(;;); implements an infinite loop. |
| 4: | for loop can be used if we want statements in a loop get executed at least once. |
Discussion:
48 comments Page 4 of 5.
Abc said:
1 decade ago
main ()
{
int i=2;
printf("%d ", i);
for(;i<=1;)
{
printf("%d ", i++);
}
printf("%d ", i);
}
{
int i=2;
printf("%d ", i);
for(;i<=1;)
{
printf("%d ", i++);
}
printf("%d ", i);
}
Naive_coder said:
2 decades ago
For loop is ultimately broken down to same machine code as a while loop doing same function. So their speed might be same.
Sathiya Baskar said:
6 years ago
for(;;);
will not execute..
if for(;;)--->> it will execute infinite times.
Am I right? Please tell me.
will not execute..
if for(;;)--->> it will execute infinite times.
Am I right? Please tell me.
(4)
Krishna said:
1 decade ago
do while is used to print statements at least once.
Is, for loop is used to print statements at least once.
Is, for loop is used to print statements at least once.
Srinivas16 said:
1 decade ago
for loop is not end with semicolon (;)
for(i=0;i<n;i++)
{
}
Then why statement 3 is correct ?
for(i=0;i<n;i++)
{
}
Then why statement 3 is correct ?
Piyush jain said:
1 decade ago
Option 4 is correct.
Watch carefully that its written "can be used" in the question.
Watch carefully that its written "can be used" in the question.
Jit said:
1 decade ago
Option C would be the answer. There is a conflict between do-while & for. Reported.
Nidhi said:
6 years ago
Statement 4 is wrong. "do while" loop is used for at least one execution not for loop.
(4)
Sandhya said:
10 years ago
For(;;); here is semicolon is present after for then how it became a infinite loop.
Abhilash said:
8 years ago
How come statement 3 be true?
We cannot put a semicolon after for bracket.
We cannot put a semicolon after for bracket.
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