This classic exercise asks you to encrypt and decrypt a password in C. The right teaching tool for it is the XOR cipher: XOR each character with a key byte, and XOR-ing a second time with the same key restores the original — one function does both directions. This page gives you a tested implementation …
Write a C program to demonstrate modf function.modf() defined in the C math.h library.modf function breaks the double/float values to integral part and fractional part. Example: res = modf(3.142, &iptr) returns res=142 and iptr=3. Read more about C Programming Language . and read the C Programming Language (2nd Edition). by K and R. /************************************************************ You can …
An anagram is a word or phrase formed by rearranging all the characters of another. In C, the standard way to check if two strings are anagrams is to count character frequencies: if both strings have exactly the same character counts, they are anagrams — regardless of order. This page shows a complete anagram program …
A magic square is a square matrix in which the sum of every row, every column, and both main diagonals is the same number (called the magic constant). This C program reads a square matrix and checks whether it is a magic square. Example: 8 1 6 3 5 7 4 9 2 Every row, …
Deleting the vowels from a string is a classic C exercise because the obvious approach — remove a character, then shift everything after it left by one — is O(n²) and fiddly. The clean solution is the two-index in-place filter: one index reads every character, a second index writes only the characters you’re keeping, and …
Write a C program to demonstrate ceil function.ceil is in the C math.h library.ceil function rounds up the smallest next integral value.Example:ceil(2.0) is 2.0ceil(2.1) is 3.0ceil(2.2) is 3.0——ceil(2.9) is 3.0Read more about C Programming Language. /************************************************************ You can use all the programs on www.c-program-example.com* for personal and learning purposes. For permissions to use the* programs …