Are unix pipe (|) and pipe we create using "pipe(int pipefd[2])" in c the same?

Question

Are unix pipe (|) that pipelines the output of a process to another and pipe we create using "pipe(int pipefd[2])" in c used for inter process communication the same?

Answer 1

Shell pipe | is implemented using pipe(2) and dup2(2) system calls.

See Unix Pipes.