#include <stdio

Functions

Similar to functions in MATLAB, except:

Can only return one output
Have to specify the data type of the function; this is the same as the data type of the function's output
Can pass arguments by reference (see section on argument passing by reference)

Below is a simple MATLAB function calling a subfunction, and its equivalent C-code

MATLAB Function


function main( )
a = 2;
b = 3;
result = timestwo(a, b);
disp(result);

% Begin function "timestwo"
function result = timestwo(a, b)
result = 2*(a+b);

Equivalent C-Code


#include <stdio.h>
void main( )
{
  	int a, b;
  	int result;
  	a = 2;
  	b = 3;
  	result = timestwo(a, b);
  	printf ("The result is %d\n", result);
}
 
/* Begin function "timestwo" */
int timestwo (int a, int b)
{
  	int result;
  	result = 2*(a+b);
  	return (result);
}

Note:
"timestwo" is an int function because its output is an integer value

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#include <stdio.h> void main( ) { int a, b; int result; a = 2; b = 3; result = timestwo(a, b); printf ("The result is %d\n", result); } /* Begin function "timestwo" */ int timestwo (int a, int b) { int result; result = 2*(a+b); return (result); }

#include <stdio.h> void main( ) { int a, b; int result; a = 2; b = 3; result = timestwo(a, b); printf ("The result is %d\n", result); } /* Begin function "timestwo" / int timestwo (int a, int b) { int result; result = 2(a+b); return (result); }