File Input Output - Practice Test

[#236] Which of the following is the right declaration for fgets() inside the library?

(A) int *fgets(char *line, int maxline, FILE *fp)

(B) char *fgets(char *line, int maxline, FILE *fp)

(C) char *fgets(char *line, FILE *fp)

(D) int *fgets(char *line, FILE *fp)

Correct Answer

(B) char *fgets(char *line, int maxline, FILE *fp)

[#237] What will be the output of the following C code? #include <stdio.h>
int main()
{
int i = 10, j = 3
printf("%d %d %d", i, j)
}

(A) Compile time error

(B) 10 3

(C) 10 3 some garbage value

(D) Undefined behaviour

(E) Compile time error

(F) 10 3

(G) 10 3 some garbage value

(H) Undefined behaviour

Correct Answer

(C) 10 3 some garbage value
(G) 10 3 some garbage value

[#238] What will be the output of the following C code? #include <stdio.h>
int main()
{
char *n
scanf("%s", n)
return 0
}

(A) Compilation error

(B) Undefined behavior

(C) Nothing

(D) None of the mentioned

Correct Answer

(B) Undefined behavior

[#239] Which of the following fopen() statements are illegal?

(A) fp = fopen("abc.txt", "r")

(B) fp = fopen("/home/user1/abc.txt", "w")

(C) fp = fopen("abc", "w")

(D) none of the mentioned

Correct Answer

(D) none of the mentioned

[#240] The syntax of printf() function is printf("control string", variable list)
what is the prototype of the control string?

(A) %[flags][.precision][width][length]specifier

(B) %[flags][length][width][.precision]specifier

(C) %[flags][width][.precision][length]specifier

(D) %[flags][.precision][length][width]specifier

Correct Answer

(C) %[flags][width][.precision][length]specifier

File Input Output - Study Mode

[#236] Which of the following is the right declaration for fgets() inside the library?

Correct Answer

[#237] What will be the output of the following C code? #include <stdio.h> int main() { int i = 10, j = 3 printf("%d %d %d", i, j) }

Correct Answer

[#238] What will be the output of the following C code? #include <stdio.h> int main() { char *n scanf("%s", n) return 0 }

Correct Answer

[#239] Which of the following fopen() statements are illegal?

Correct Answer

[#240] The syntax of printf() function is printf("control string", variable list) what is the prototype of the control string?

Correct Answer

[#237] What will be the output of the following C code? #include <stdio.h>
int main()
{
int i = 10, j = 3
printf("%d %d %d", i, j)
}

[#238] What will be the output of the following C code? #include <stdio.h>
int main()
{
char *n
scanf("%s", n)
return 0
}

[#240] The syntax of printf() function is printf("control string", variable list)
what is the prototype of the control string?