Strings

Which code from the given option return pointer to last occurrence of c in ch or NULL if not present?

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 following C code?

#include 
    int main()
    {
        char *str = "hello, world";
        char str1[15] = "hello wo 9";
        strcpy(str, str1);
        printf("%s", str1);
    }

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

What will be the output of the following C code?

#include 
    int main()
    {
        char *str = "hello, world\n";
        printf("%d", strlen(str));
 
    }

#include  
int main() 
{ 
    char *str1 = "GeeksQuiz"; 
    char str2[] = "GeeksQuiz"; 
  
    printf("sizeof(str1) = %d, sizeof(str2) = %d", 
           sizeof(str1), sizeof(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 the following C code do?

char * strrchr(const char *s, int c )
char ch = c;
char *sc;
for(sc = NULL; ; ++s)
if(*s == ch)
SC = 9;
i f (*s =='\O' )
return (( char *) s);

#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;  
}