Interview Questions on C - Arrays
1. What is Array?
Array is collections of similar data types of elements.
2. How to declare an array?
Syn :- datatype arrayname [size];
Ex :- int a[10];
3. How to access last position of element in array?
By using position value.
Arrayname[size -1 ];
4. Write a matrix addition programm?
See C Programs Page
5. How to declare multi dimentional arrays?
Syn :- datatype array_name[size1][size2];
6. How to find size of an array?
By using size of operator.
Ex :- sizeof(arr1);
Strings
1. Explain about strings?
Def :- String is collection of charrecters.
the last character of the string is null or ‘\0’.
We can represent the string by using character array.
Syn :- char str1[]=”Hello world”;
Here by default the last character would be ‘\0’.
2. How to print string in printf statement?
By using ‘%s’.
Ex:-
char str1[]=”Hello”;
printf(“%s”,str1);
3. How to converta numbet to string?
4. How to Convert a number to string?
5. How to find the length of the String?
strlen(s1);
Returns the length of string s1.
6. How to copy from one string to another string?
strcpy(s1, s2);
Copies string s2 into string s1.
7. How to combine or concat two strings?
strcat(s1, s2);
Concatenates string s2 onto the end of string s1.
8. Write a C program to reverse the string?
See C Programs