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1.
The malloc() function returns a null if it fails to allocate the requested memory.
2.
What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?
3.
In C, if an array is passed as an argument to a function, which of the following is passed?
4.
What is the output of the following C code:
#include
int main() {
int a[5] = {
5,
1,
15,
20,
25
};
int i, j, m;
i = ++a[1];
j = a[1]++;
m = a[i++];
printf("%d, %d, %d", i, j, m);
return 0;
}
int main() {
int a[5] = {
5,
1,
15,
20,
25
};
int i, j, m;
i = ++a[1];
j = a[1]++;
m = a[i++];
printf("%d, %d, %d", i, j, m);
return 0;
}
5.
What is the output of the following C code:
#include
void fun(int ** p);
int main() {
int a[3][4] = {
1,
2,
3,
4,
4,
3,
2,
8,
7,
8,
9,
0
};
int * ptr;
ptr = & a[0][0];
fun( & ptr);
return 0;
}
void fun(int ** p) {
printf("%d
", ** p);
}
void fun(int ** p);
int main() {
int a[3][4] = {
1,
2,
3,
4,
4,
3,
2,
8,
7,
8,
9,
0
};
int * ptr;
ptr = & a[0][0];
fun( & ptr);
return 0;
}
void fun(int ** p) {
printf("%d
", ** p);
}
6.
What is the output of the following C code:
#include <stdio.h>
int main()
{
int arr[1] = {10};
printf("%d
", 0[arr]);
return 0;
}
int main()
{
int arr[1] = {10};
printf("%d
", 0[arr]);
return 0;
}
7.
What is the output of the following C code:
#include
int main() {
float arr[] = {
12.4,
2.3,
4.5,
6.7
};
printf("%d
", sizeof(arr) / sizeof(arr[0]));
return 0;
}
int main() {
float arr[] = {
12.4,
2.3,
4.5,
6.7
};
printf("%d
", sizeof(arr) / sizeof(arr[0]));
return 0;
}
8.
If an array begins from 1200 in the memory, what is the output of the following C code:
#include
int main() {
int arr[] = {
2,
3,
4,
1,
6
};
printf("%u, %u, %u
", arr, & arr[0], & arr);
return 0;
}
int main() {
int arr[] = {
2,
3,
4,
1,
6
};
printf("%u, %u, %u
", arr, & arr[0], & arr);
return 0;
}
9.
Which of these is the correct way to define the fun() function in the following C code:
#include
int main() {
int a[3][4];
fun(a);
return 0;
}
int main() {
int a[3][4];
fun(a);
return 0;
}
10.
Which of these statements about the following C code is correct:
#include
int main() {
int size, i;
scanf("%d", & size);
int arr[size];
for (i = 1; i <= size; i++) {
scanf("%d", & arr[i]);
printf("%d", arr[i]);
}
return 0;
}
int main() {
int size, i;
scanf("%d", & size);
int arr[size];
for (i = 1; i <= size; i++) {
scanf("%d", & arr[i]);
printf("%d", arr[i]);
}
return 0;
}