3882078
Description
Quiz by aman.sinha42, updated more than 1 year ago
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Created by aman.sinha42
over 8 years ago
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Question 1
Question
Which of the following statements are correct about an if-else statements in a C-program?
1: Every if-else statement can be replaced by an equivalent statements using ?: operators
2: Nested if-else statements are allowed.
3: Multiple statements in an if block are allowed.
4: Multiple statements in an else block are allowed.
Answer
-
1 and 2
-
2 and 3
-
1, 2 and 4
-
2, 3, 4
Question 2
Question
Point out the error, if any in the for loop.
#include<stdio.h>
int main()
{
int i=1;
for(;;)
{
printf("%d\n", i++);
if(i>10)
break;
}
return 0;
}
Answer
-
There should be a condition in the for loop
-
The two semicolons should be dropped
-
The for loop should be replaced with while loop.
-
No error
Question 3
Question
8 What is x in the following program?
#include<stdio.h>
int main()
{
typedef char (*(*arrfptr[3])())[10];
arrfptr x;
return 0;
}
Answer
-
x is a pointer
-
x is an array of three pointer
-
x is an array of three function pointers
-
Error in x declaration
Question 4
Question
How will you free the memory allocated by the following program?
#include<stdio.h>
#include<stdlib.h>
#define MAXROW 3
#define MAXCOL 4
int main()
{
int **p, i, j;
p = (int **) malloc(MAXROW * sizeof(int*));
return 0;
}
Answer
-
memfree(int p);
-
dealloc(p);
-
malloc(p, 0);
-
free(p);
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