What is the output of C program?

void main(){
int b = 25;
//b memory location = 1234;
int *p;
p=&b;
printf("%d %d", &b, p);
}

1. 25 25
2. 1234 1234
3. 25 1234
4. 1234 25

Ans: a

Which statement/s is/are true to open a binary file "Record.dat" for reading and writing?

1. file=open("Record.dat","wb")
2. file=open("Record.dat","rb")
3. file=open("Record.dat","ab")
4. file=open("Record.dat","rb+")

Ans: a

What is the output of this statement "printf("%d", (a++))" in C programming?

1. The current value of a
2. the value of a increment by 1
3. Error
4. Garbage

Ans: c

Which of the following is true about FILE *fpt ?

1. FILE is a keyword in C for representing files and fpt is a variable of FILE type
2. FILE is a buffered stream
3. FILE is a stream
4. FILE is a structure and fpt is a pointer to the structure of FILE type.

Ans: d

What is the correct syntax to declare a structure in C?

1. struct { }
2. define struct { }
3. struct [ ]
4. struct structure_name { }

Ans: d

which operator is used to get the address of a variable?

1. }*
2. &
3. ->
4. .

Ans: b

What will be the output of the program code?

Void main() {

char str1[20]="Hello",

str[20]="world";

strcat(str1,str2);

puts(str1);

}

1. Hello
2. World
3. Helloworld
4. wordHello

Ans: c

What is the correct way to open a file named "data.txt" in C for reading?

1. fopen("data.txt", "r");
2. fopen("data.txt", "w");
3. fopen("data.txt", "a");
4. fopen("data.txt", "rb");

Ans: a