C Program to find all the permutations of a given string.

Write a c program to find all the permutations of a given string.Example: If the given string is sam, output is,samsmamsamasasmams.Read 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 for commercial purposes,* contact [email protected]* To find more …

Dining Philosophers Problem in C – pthreads and Deadlock Prevention

The Dining Philosophers problem is a classic synchronization puzzle introduced by Edsger Dijkstra to illustrate deadlock and resource contention. Five philosophers sit at a round table with a single fork between each pair of neighbors — five forks total. Each philosopher alternates between thinking and eating, but eating requires picking up both the fork on …

Infix to Prefix Conversion in C – Stack Algorithm with Code

Infix to prefix conversion in C turns an everyday expression like (A+B)*C into its prefix (Polish notation) form *+ABC, where every operator comes before its operands. Compilers and expression evaluators use prefix and postfix forms because they need no parentheses and no precedence rules to evaluate — the structure is unambiguous. The standard algorithm is …

C Program to demonstrate isalpha, isdigit, is space.

C Program to demonstrate the following functions:isalpha, isdigit, isspace.The same principles apply to isalnum, iscntrl, isgraph,islower, isprint, ispunct, isupper, isxdigit.In the standard library ctype.h all the above functions are declared.All the subroutines mentioned here, returns non zero(true), If the checked argument is true for the respective subroutines. Read more about C Programming Language . /************************************************************ …

K&R C Programs Exercise 7-7

Exercise 7-7. Modify the pattern finding program of Chapter 5 to take its input from a set of named files or, if no files are named, from the standard input. Should the file name be printed when a match is found? Yes — when searching multiple files the filename should prefix each matching line (the …

K&R C Programs Exercise 7-5

Exercise 7-5. Rewrite the postfix calculator of Chapter 4 to use scanf and/or sscanf to do the input and number conversion. The original Chapter 4 calculator used a custom getop() that read characters one at a time with getch/ungetch to recognise numbers vs operators. With scanf we replace that with a simpler approach: read one …