Call by reference...

I have this program that asks you to input numbers, takes the average and prints it out.... its pretty easy if you do by Value but i have to do it using Call by reference....so far i have :

Code:

---

#include <stdio.h>

void INPUT(int *var1, int *var2, int *var3, int *var4);
void AVERAGE(int var1, int var2, int var3, int var4,float *var5);
void OUTPUT(float *var);

main(){

int x,y,z,v;
float sum, output;

float *psum, *poutput;

psum=&sum;
poutput=&output;


INPUT(x, y,z,v);
AVERAGE(x, y,z,v,psum);
OUTPUT(poutput);

}

void INPUT(int *var1, int *var2, int *var3, int *var4){

printf("Please enter four integers : ");
scanf("%d%d%d%d", *var1, *var2, *var3, *var4 );


}

void AVERAGE(int var1, int var2, int var3, int var4,float *var5){

*var5=(var1+ var2 + var3 + var4)/4;
}


void OUTPUT(float *var){
printf("Average of the 4 integers is %5.2f \n", *var);
}

---

i'm not sure what this error is about....:confused:




programs\lab5.c:21: warning: passing arg 1 of `INPUT' makes pointer from integer without a cast
programs\lab5.c:21: warning: passing arg 2 of `INPUT' makes pointer from integer without a cast
programs\lab5.c:21: warning: passing arg 3 of `INPUT' makes pointer from integer without a cast
programs\lab5.c:21: warning: passing arg 4 of `INPUT' makes pointer from integer without a cast

try this


INPUT (&x, &y, &z, &v);

Code:

---

#include <stdio.h>

void INPUT(int *var1, int *var2, int *var3, int *var4);
void AVERAGE(int var1, int var2, int var3, int var4,float *var5);
void OUTPUT(float *var);

main(){

int x,y,z,v;
float sum, output;

float *psum, *poutput;

psum=&sum;
poutput=&output;


INPUT(&x, &y,&z,&v);
AVERAGE(x, y,z,v,psum);
OUTPUT(poutput);

}

void INPUT(int *var1, int *var2, int *var3, int *var4){

printf("Please enter four integers : ");
scanf("%d%d%d%d", &var1, &var2, &var3, &var4 );


}

void AVERAGE(int var1, int var2, int var3, int var4,float *var5){

*var5=(var1+ var2 + var3 + var4)/4;
}


void OUTPUT(float *var){
printf("Average of the 4 integers is %5.2f \n", *var);
}

---

it compiles now but it gives me 0 as an output ....what am i missing?

> scanf("%d%d%d%d", &var1, &var2, &var3, &var4 );
They're already pointers (within this function), so
scanf("%d%d%d%d", var1, var2, var3, var4 );

yeah baby i fixed it


changed OUTPUT(poutput); to

OUTPUT(psum);

i guess that make sense.....although now i dont get float values


i'll figure that out...