At the character level, getchar() reads one character at a time from stdin, while putchar() writes one character at a time to stdout.
#include
main()
{
int i;
int ch;
for( i = 1; i<= 5; ++i ) {
ch = getchar();
putchar(ch);
}
} (more…)
To indicate that the function does not return a value, declare it with a return type of void.Also to declare that there is no arguments with function just write void in place of it.
Syntax :
—-void function-name( void ){ body}——
A simple function is, (more…)
Functions are easy to use; they allow complicated programs to be parcelled up into small blocks, each of which is easier to write, read, and maintain.
A function is declared in the following manner:
return-type function-name
(parameter-list,…)
{body…}
return-type -is the variable type that the function returns. This can not be an array type . If not given, then int is assumed. (more…)
The return statement immediately ends the execution of a subprogram and returns control to the caller.
For a function of return type void, a return statement is not strictly necessary. If the end of such a function is reached without encountering a return statement, control is passed to the caller as if a return statement without an expression were encountered. In other words, an implicit return takes place upon completion of the final statement, and control automatically returns to the calling function.