How can I manipulate a string given as a parameter in a C program?

Question

For example I want to create a program called "search.c" that searches for a certain caracter in a string given as a parameter like this :

./search.c "myString"

How can I store "myString" in a variable so I can manipulate it

Answer 1

int main(int argc, char *argv[]) {
   ...
}

"myString" will be accessible in your program via argv[1].