Arrays and Strings

--- A string in C is a sequence of characters stored in a character array and terminated by a null character (\0). C does not have a built-in string data type; instead, strings are represented as arrays of type char. Declaration: The null character \0 marks...

A string in C is defined as a one-dimensional array of characters terminated by a null character (\0). Unlike some other languages, C does not have a built-in string data type. Syntax: Examples of string declaration and initialization: The null character \0...

--- An array is a collection of elements of the same data type stored in contiguous (adjacent) memory locations, all sharing a common name and accessed individually using an index (subscript). Declaration Syntax: Example: Key Properties: Property Detail ---...

--- An array is a collection of elements of the same data type stored in contiguous (adjacent) memory locations, all sharing a common name and accessed individually using an index (subscript). General Syntax (C): Example: Here, all 5 integers are stored one...

For an n×n matrix, there are two diagonals: - Principal (Main) Diagonal: elements where row index == column index → a[i][i] - Secondary (Anti) Diagonal: elements where row + column = n-1 → a[i][n-1-i] Note: If an element lies on both diagonals (center of od...

--- Step Description ------------------- Step 1 Declare three 3x3 integer arrays: A, B, and C Step 2 Use nested for loops to read elements of matrix A Step 3 Use nested for loops to read elements of matrix B Step 4 Add corresponding elements: C[i][j] = A[i]...

The pattern reaches us as the run-on string NNNNENENENEPNEPNEPNEPANEPANEPANEPALNEPALNEPAL, so the first job is to break it back into rows. Splitting it into consecutive prefixes of "NEPAL" gives and joining these five rows back together reproduces the given...

1
1 2 1
1 2 3 2 1
1 2 3 4 3 2 1

Looking at the pattern carefully: Each row i prints numbers from 1 to i, then back from i-1 to 1. --- --- --- Row (i) Increasing Part Decreasing Part Full Row --------------------------------------------------------- 1 1 (none) 1 2 1 2 1 1 2 1 3 1 2 3 2 1 1...

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

Looking at the pattern carefully: Pattern Logic: - Row i contains i groups - Each group in row i prints numbers from 1 to i - Except the last group which prints 1 to i (for last row) or ends with the row number --- --- --- --- Concept Description ----------...

A multi-dimensional array is an array that has more than one dimension (index). It can be thought of as an array of arrays. The most common form is the two-dimensional (2D) array, which represents data in rows and columns (like a matrix). General syntax in ...

A multi-dimensional array is an array that has more than one dimension (index). It can be thought of as an array of arrays. The most common form is the two-dimensional (2D) array, which represents data in rows and columns (like a matrix or table). General S...

A palindrome is a string that reads the same forwards and backwards. Example: "madam", "racecar", "level" --- --- Step Description ------------------- 1 Read the string from the user 2 Find the length using strlen() 3 Compare str[0] with str[len-1], str[1] ...

--- S.N. Function Use / Purpose ------------------------------- 1 strlen() Returns the length of a string (number of characters excluding null character \0) 2 strcpy() Copies one string into another string 3 strcat() Concatenates (joins/appends) one string ...