For a given function in c the argument type which

•
For a given function in C, the argument type –
which corresponds to the domain in mathematics –
is the data type that C expects for an argument of
that function.
•
For example:
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the argument type of abs is int ;
•
the argument type of fabs is float .
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Argument Type Mismatch
©LPU CSE101 C
Programming
•
An argument type mismatch is when you pass an
argument of a particular data type to a function that
expects a different data type.
•
Some implementations of C WON’T check for you
whether the data type of the argument you pass is
correct. If you pass the wrong data type, you can get a
bogus answer.
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This problem is more likely to come up when you pass
a float where the function expects an int . In the
reverse case, typically C simply promotes the int to a
float .
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#include <stdio.h>
#include <math.h>
int main ()
{
const float pi = 3.1415926;
printf("2.0 = %f\n", 2.0);
printf("pi = %f\n", pi);
printf("cos(pi) =%f\n", cos(pi));
printf("sin(pi) = %f\n", sin(pi));
printf("sqrt(2.0) = %f\n", sqrt(2.0));
printf("sqrt(2.0)/2= %f\n", sqrt(2.0)/ 2 );
}
Implementation of in-build function
2.0 = 2.000000
pi = 3.141593
cos(pi) = -1.000000
sin(pi) = 0.000000
sqrt(2.0) = 1.414214
sqrt(2.0) / 2 = 0.707107

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©LPU CSE101 C
Programming
21