rashrosheh
IS-IT--Management
i cant understand the return value,can u help me?
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new programmer 1
- Thread starter rashrosheh
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1
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EXAMPLE:
float functionCompute(int a, int b)
This is a function that does something to integer a and integer b and then returns a floating point data type when it is all through.
When your function has a return type, it is that thing that comes after the keyword "return"
functionCompute(int a, int b)
{
float answer;
answer = (float) a + (float) b;
return answer;
}
See, the object that comes after return is yours to use back in the main program. In this case, it is yours to use as a float. So you could go:
...
float someNumber;
someNumber = functionCompute(5, 6);
printf("%f", someNumber);
...
this would print the number 11
Or you could just go:
printf("%f", functionCompute(5, 6));
See? functionCompute(5, 6) is totally a floating point object because that is what is returned by the function.
The only time you don't return anything is when the function is declared as return type void.
float functionCompute(int a, int b)
This is a function that does something to integer a and integer b and then returns a floating point data type when it is all through.
When your function has a return type, it is that thing that comes after the keyword "return"
functionCompute(int a, int b)
{
float answer;
answer = (float) a + (float) b;
return answer;
}
See, the object that comes after return is yours to use back in the main program. In this case, it is yours to use as a float. So you could go:
...
float someNumber;
someNumber = functionCompute(5, 6);
printf("%f", someNumber);
...
this would print the number 11
Or you could just go:
printf("%f", functionCompute(5, 6));
See? functionCompute(5, 6) is totally a floating point object because that is what is returned by the function.
The only time you don't return anything is when the function is declared as return type void.
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