Explore topic-wise MCQs in Strings.

What will be the output of the program ?

 #include int main() { char *names[] = { "Suresh", "Siva", "Sona", "Baiju", "Ritu"}; int i; char *t; t = names[3]; names[3] = names[4]; names[4] = t; for(i=0; i<=4; i++) printf("%s,", names[i]); return 0; }

What will be the output of the program ?

 #include #include int main() { char str[] = "India 0 BIX 0"; printf("%d n", strlen(str)); return 0; }

What will be the output of the program ?

 #include int main() { char str[7] = "IndiaBIX"; printf("%s n", str); return 0; }

What will be the output of the program If characters 'a', 'b' and 'c' enter are supplied as input?

 #include int main() { void fun(); fun(); printf(" n"); return 0; } void fun() { char c; if((c = getchar())!= ' n') fun(); printf("%c", c); }

What will be the output of the program ?

 #include int main() { printf("India", "BIX n"); return 0; }

What will be the output of the program ?

 #include #include int main() { char str[] = "India 0 BIX 0"; printf("%s n", str); return 0; }

What will be the output of the program ?

 #include #include int main() { printf("%d n", strlen("123456")); return 0; }

What will be the output of the program ?

 #include int main() { printf(5+"Good Morning n"); return 0; }

What will be the output of the program ?

 #include int main() { char p[] = "%d n"; p[1] = 'c'; printf(p, 65); return 0; }

What will be the output of the program ?

 #include #include int main() { char str1[20] = "Hello", str2[20] = " World"; printf("%s n", strcpy(str2, strcat(str1, str2))); return 0; }

What is the output of following program?

 # include  int main() { char str1[] = "GeeksQuiz"; char str2[] = {'G', 'e', 'e', 'k', 's', 'Q', 'u', 'i', 'z'}; int n1 = sizeof(str1)/sizeof(str1[0]); int n2 = sizeof(str2)/sizeof(str2[0]); printf("n1 = %d, n2 = %d", n1, n2); return 0; } 

What will be the output of the program ?

 #include #include int main() { char str1[5], str2[5]; int i; gets(str1); gets(str2); i = strcmp(str1, str2); printf("%d n", i); return 0; }

What will be the output of the program ?

 #include int main() { int i; char a[] = " 0"; if(printf("%s", a)) printf("The string is not empty n"); else printf("The string is empty n"); return 0; }

If the size of pointer is 4 bytes then What will be the output of the program ?

 #include int main() { char *str[] = {"Frogs", "Do", "Not", "Die", "They", "Croak!"}; printf("%d, %d", sizeof(str), strlen(str[0])); return 0; }

What will be the output of the program (Turbo C in 16 bit platform DOS) ?

 #include #include int main() { char *str1 = "India"; char *str2 = "BIX"; char *str3; str3 = strcat(str1, str2); printf("%s %s n", str3, str1); return 0; }

What will be the output of the program ?

 #include #include int main() { char sentence[80]; int i; printf("Enter a line of text n"); gets(sentence); for(i=strlen(sentence)-1; i >=0; i--) putchar(sentence[i]); return 0; }

What will be the output of the program ?

 #include int main() { printf(5+"IndiaBIX n"); return 0; }

What will be the output of the program ?

 #include int main() { char str[] = "Nagpur"; str[0]='K'; printf("%s, ", str); str = "Kanpur"; printf("%s", str+1); return 0; }

What will be the output of the program ?

 #include int main() { char str = "IndiaBIX"; printf("%s n", str); return 0; }

What will be the output of the program ?

 #include int main() { char str[25] = "IndiaBIX"; printf("%s n", &str+2); return 0; }

What will be the output of the program ?

 #include int main() { char str1[] = "Hello"; char str2[10]; char *t, *s; s = str1; t = str2; while(*t=*s) *t++ = *s++; printf("%s n", str2); return 0; }

What will be the output of the program ?

 #include int main() { char str[] = "India 0BIX 0"; printf("%d n", sizeof(str)); return 0; }

What will be the output of the program ?

 #include int main() { static char mess[6][30] = {"Don't walk in front of me...", "I may not follow;", "Don't walk behind me...", "Just walk beside me...", "And be my friend." }; printf("%c, %c n", *(mess[2]+9), *(*(mess+2)+9)); return 0; }

What will be the output of the program ?

 #include int main() { int i; char a[] = " 0"; if(printf("%s", a)) printf("The string is empty n"); else printf("The string is not empty n"); return 0; }

If char=1, int=4, and float=4 bytes size, What will be the output of the program ?

 #include int main() { char ch = 'A'; printf("%d, %d, %d", sizeof(ch), sizeof('A'), sizeof(3.14f)); return 0; }

What will be the output of the program in 16-bit platform (Turbo C under DOS) ?

 #include int main() { printf("%d, %d, %d", sizeof(3.0f), sizeof('3'), sizeof(3.0)); return 0; }

What will be the output of the following C code?

 const char pla[] = "string1"; const char src[] = "string2"; printf("Before memmove place= %s, src = %s n", pla, src); memmove(pla, src, 7); printf("After memmove place = %s, src = %s n", pla, src);

Assume that a character takes 1 byte. Output of following program?

 #include int main() { char str[20] = "GeeksQuiz"; printf ("%d", sizeof(str)); return 0; } 

Output of following program

 #include  int fun(char *p) { if (p == NULL || *p == ' 0') return 0; int current = 1, i = 1; while (*(p+current)) { if (p[current] != p[current-1]) { p[i] = p[current]; i++; } current++; } *(p+i)=' 0'; return i; } int main() { char str[] = "geeksskeeg"; fun(str); puts(str); return 0; } 

Predict the output of the following program:

 #include  int main() { char str[] = "%d %c", arr[] = "GeeksQuiz"; printf(str, 0[arr], 2[arr + 3]); return 0; } 

Output?

 int main() { char a[2][3][3] = {'g','e','e','k','s','q','u','i','z'}; printf("%s ", **a); return 0; } 

 #include  void my_toUpper(char* str, int index) { *(str + index) &= ~32; } int main() { char* arr = "geeksquiz"; my_toUpper(arr, 0); my_toUpper(arr, 5); printf("%s", arr); return 0; } 

In below program, what would you put in place of ? to print Quiz ?

 #include  int main() { char arr[] = "GeeksQuiz"; printf("%s", ?); return 0; } 

What does the following fragment of C-program print?

 char c[] = "GATE2011"; char *p =c; printf("%s", p + p[3] - p[1]) ; 

Predict the output?

 #include  int fun(char *str1) { char *str2 = str1; while(*++str1); return (str1-str2); } int main() { char *str = "GeeksQuiz"; printf("%d", fun(str)); return 0; } 

What is the output of following program?

 #include void swap(char *str1, char *str2) { char *temp = str1; str1 = str2; str2 = temp; } int main() { char *str1 = "Geeks"; char *str2 = "Quiz"; swap(str1, str2); printf("str1 is %s, str2 is %s", str1, str2); return 0; } 

NULL is the macro defined in the header string. h.

Which of the following is the variable type defined in header string. h?

What is the function of strcoll()?

The ______ function appends not more than n characters.

What is the prototype of strcoll() function?

What will strcmp() function do?

Which function will you choose to join two words?

Which among the following is Copying function?

 #include  int main() { char *str1 = "GeeksQuiz"; char str2[] = "GeeksQuiz"; printf("sizeof(str1) = %d, sizeof(str2) = %d", sizeof(str1), sizeof(str2)); return 0; } 

Functions whose names begin with strn

What will be the output of the following C code?

 const char str1[] = "abcdef"; const char str2[] = "fgha"; char *mat; mat= strpbrk(str1, str2); if(mat) printf("First matching character: %c n", *mat); else printf("Character not found");

What will be the output of the following C code?

 char str1[] = "Helloworld "; char str2[] = "Hello"; len = strspn(str1, str2); printf("Length of initial segment matching %d n", len );

Which of the following is the right syntax to copy n characters from the object pointed to by s2 into the object pointed to by s1?

What is the function of void *memset(s, c, n)?