Implicit Decleration Of function "setWeight" - c

Question

I'm writing program but getting this warning !! Can someone help me in this regard.
#include <stdio.h>
#include <stdlib.h>
typedef int bool;
#define true 1
#define false 0
#define M 5 // Define total molecules
#define MAX 31 // used to Create a range
#define N 6 // Define total nodes in the given graph
unsigned int nondet_uint(); // returns a non_deterministic uint
typedef unsigned __CPROVER_bitvector[M] bitvector;
//constrains the non_detrministic uint to be between 0 and n
unsigned int oneTon (unsigned int n){
unsigned int result = nondet_uint();
__CPROVER_assume(result>=1 && result<=n);
return result;
};
//Constrain the value between 0 and 1
unsigned int nondet (){
unsigned int num = nondet_uint();
__CPROVER_assume( num>= 0 && num <= 1);
return num;
};
//Define a structure to represent the EdgeBag that is a tuple :
// edgeBag := (i,j,edgeWeight, mask, inclusionSet, exclusionSet)
struct EdgeBag
{
int ith;
int jth;
bitvector edgeWeight;
bitvector mask;
bitvector inclusionSet;
bitvector exclusionSet;
};
// Setweight function
// Going to give the edges the weight and then allow furture calculation of inclusion and exclusion set
bitvector setWeight( bitvector node) {
bitvector edge;
edge = 00000;
for(unsigned int k=0; k<N; k++){
if ((node & (00001 << k)) == (00001 << k)) {
edge = (edge | (nondet() << k));
}
}
printf("value of the egde is %d", edge);
return edge;
}
void main(){
unsigned int pos , i, j, k, l, v, w, x, y , iVal, jVal;
unsigned int edgePos, bagNo = 0, colorNode = 0 , minColor, len = 0, cPos = 0;
bool C0 , C1 , C2 , C3;
bitvector compartment1 , compartment2 , compartment3 , compartment4, compartment5, compartment6;
bitvector nodes[N] = {compartment1, compartment2, compartment3, compartment4, compartment5, compartment6};
bitvector total , fareTotal, outTotal, inTotal;
// Represent the graph with given topology
bool graph[N][N] = {{0, 0, 1, 1, 0, 0 },
{1, 0, 0, 0, 0, 0},
{0, 1, 0, 0, 0, 0},
{0, 0, 1, 0, 1, 0},
{0, 0, 0, 0, 0, 1},
{0, 1, 0, 0, 0, 0}
};
// Specify that all compartments are distinct
for(i=0; i<N; i++) {
for(j=0 ; j < N ; j++) {
if(graph[i][j] == 1) {
len = len + 1;
}
if(i != j) {
__CPROVER_assume(nodes[i] != nodes[j]);
}
}
}
// Create a structure that will contain edges.
struct EdgeBag edgeBag[len];
// Define colorGraph and colorSet for the represetaion
bool colorGraph[len][len];
unsigned int colorSet[len];
// Set the weight of the edge : for each edge in the graph call add to the esdge bag and add its edgeweight
// setWeight function and allow all possible subsets to move from a node to anotheer
// Set ith jth position and edgeweight to the position of edgeBag[len] array
edgePos = 0;
for(i=0; i<N; i++) {
for(j=0; j<N; j++) {
if (graph[i][j] == 1) {
edgeBag[edgePos].ith = i;
edgeBag[edgePos].jth = j;
**HERE IS THE PROBLEM !!!**
edgeBag[edgePos].edgeWeight = setWeight(nodes[i]);
edgePos = edgePos + 1;
}
}
}
I understand that this warning comes when compiler has not seen a declaration before function use. But i have declared the setWeight Function already and looks like type too matches. Kindly help me with this , I got stuck here since last night. Thanks

Answer 1

you function expects bitvector - bitvector setWeight( bitvector node)
but gets bitvector[ ] -
bitvector nodes[N] = {...};
...
[edgePos].edgeWeight = setWeight(nodes);