user defined functions

[refeik]

When i write this function using user defined functions, i always get a syntax error by the sum.

//declare identifiers
int x,y,z,max,min;

//read three interger numbers
readData(x,y,z)

//find and display sum
int sum;
float average;

findSumAve(x,y,z, sum, average);
showSumAve(max, min);

//find and display the max and min of x,y,z
findMaxMin (max,min,x,y,z);
showMaxMin(max,min);

//terminate program
return 0;

int main()
{
int x,y,sum,min,max;
readdata(x,y);
sum = computesum (x,y)

find maxmin (x,y,max,min);

display (sum,max,min);
system("puase")
return 0;