function pointer as function argument

[HighlightReel44]

I need help writing a program which will display a menu with options Square, Cube, Fourth Power and Quit. Accept S,C,F,Q from the user non case sensitive. Use integers between 0 and 100 and tabulate the selected function for all integers within this interval. I need to use a C++ function with a function pointer

Thanks a lot in advance

Need answers in next 4 days

[jkmyoung]

Didn't we already answer this?.. hold on looking for the thread. (perhaps it was deleted)
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Show what you've done so far.

[HighlightReel44]

@HighlightReel44
hey i havnet been able to locate the thread for this because i guess i asked this question twice any luck locating it

Thanks

[Banfa]

The original thread was deleted because it did not meet our posting guidelines.

In particular you need to make sure that when you post that you

• Give as much detail as possible When you post a question or problem, express the situation clearly and concisely and include all relevant information, code used, data used, result expected, result achieved and any error codes or messages that you get as a result.
• Use Clear English to write your question in if possible, try to avoid using abbreviations
• Make use of the available formatting tags in the forum Use CODE tags around your code unless you are posting a single line of code in which case it is acceptable to omit them:
  * [code]..code goes here..[/code]

I would say this thread is also at risk of deletion.

[HighlightReel44]

I need to write a program which will display a menu with the options Square, Cube, Fourth Power and Quit. Accept S, C, F or Q from the user, non-case sensitive. Do not forget to validate the user input. When a valid option is selected, the program will begin tabulating the selected function in an interval. Ask the user for two integers in the range 0 to 100, to be used as interval boundaries. Tabulate the selected function (Square, Cube, or Fourth Power) for all integers within the interval. To implement the tabulation, use a C++ function with a function pointer argument (so that you can pass to it function square, cube, or fourthPower as an actual argument). Provide well formatted, easily readable output.

Thanks

[Banfa]

In the time you have spent asking us for help you could have already written your program and started ironing out the problems.

We WILL NOT write your code for you. Write some yourself and post problems you are having with it.

[newb16]

Passing function pointer as a parameter will look like this.

#include <stdio.h>
typedef int (*funptr)(int);
int tabb(funptr f) {
  // for all in range.....
  printf("%d ",f(2));
}
 
int cubefun(int x) {
return x*x*x;
}
 
int pow4fun(int x) {
return x*x*x*x;
}
 
int main() {
  funptr userfun;
  //userfun = cubefun;
  userfun = pow4fun;
  tabb(userfun);
} 
 

[donbock]

Refer to the qsort man page for an example.

[HighlightReel44]

@newb16
Thanks a lot this was very helpful