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C Programming :: Strings

Strings - General Questions
Strings - Yes / No Questions
Strings - Find Output of Program
Strings - Point Out Correct Statements

  1. Which of the following statements are correct about the program below?

     #include
 
  int main() 
  {   
       char str[20], *s;     
       printf("Enter a string\n");     
       scanf("%s", str); 
       s=str;    
       while(*s != '\0')  
       {        
           if(*s >= 97 && *s 122)             
               *s = *s-32;         
            s++;  
       }   
       printf("%s",str);  
       return 0;
  }

    2. A.

    The code converts a string in to an integer
    B.

    The code converts lower case character to upper case
    C.

    The code converts upper case character to lower case
    D.

    Error in code

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  2. Which of the following function sets first n characters of a string to a given character?

    3. A.

    strinit()
    B.

    strnset()
    C.

    strset()
    D.

    strcset()

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  3. How will you print \n on the screen?

    4. A.
    printf("\n");
    B.
    echo "\\n";
    C.
    printf('\n');
    D.
    printf("\\n");

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  4. The library function used to find the last occurrence of a character in a string is

    5. A.

    strnstr()
    B.

    laststr()
    C.

    strrchr()
    D.

    strstr()

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  5. Which of the following function is used to find the first occurrence of a given string in another string?

    6. A.

    strchr()
    B.

    strrchr()
    C.

    strstr()
    D.

    strnset()

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  6. Which of the following function is more appropriate for reading in a multi-word string?

    7. A.

    printf();
    B.

    scanf();
    C.

    gets();
    D.

    puts();

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  7. Which of the following function is correct that finds the length of a string?

    8. A. 
    int xstrlen(char *s)
 {    
    int length=0;   
    while(*s!='\0')     
    { length++; s++; }    
    return (length); 
}
    B. 
    int xstrlen(char *s)
 {     
     int length=0; 
     while(*s!='\0')   
         length++; s++;    
     return (length);
 }
    C. 
    int xstrlen(char *s)
 { 
     int length=0;  
     while(*s!='\0')      
        length++;  
   return (length); 
}
    D. 
    int xstrlen(char *s) 
 {    
     int length=0;   
     while(*s!='\0')    
          s++;    
     return (length);
  } 
     

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