having some trouble with function libraries
Hey everyone. For some strange reason my program won't read in from the libraries I'm including at the top:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#define BUFFER_SIZE 70
#define TRUE 1
#define FALSE 0
int** img;
int numRows;
int numCols;
int maxVal;
FILE* fo1;
void addtopixels(int** imgtemp, int value);
void writeoutpic(char* fileName, int** imgtemp);
int** readpic(char* fileName);
void readHeader(FILE* imgFin);
int isComment(char* line);
void readImgID(char* line);
void readImgSize(char* line);
void readMaxVal(char* line);
int** setImage();
void readBinaryData(FILE* imgFin, int** imgtemp);
void choice1();
void choice2();
void choice3();
void sobelfunc(int** pic, int** edges, int** tempx, int** tempy);
void subtractpic(int** img1, int** img2, int** img3);
int** temppicx;
int** temppicy;
int** img;
int** sobelout;
int choice;
int brightness;
char fileName1, fileName2;
int main()
{
char fileName[BUFFER_SIZE];
int i,j,rows,cols;
char ci;
printf("Successfully read image file '%s'\n", fileName);
printf("Which action would you like to perform?\n");
printf("1. Edit the brightness.\n");
printf("2. Subtract 2 images.\n");
printf("3. Sobel edge highlighter.\n");
prinft("4. Exit\n");
scanf("%d", &choice);
while (choice != 4) {
if (choice == 1) {
option1();
}
if (choice == 2) {
option2();
}
if (choice == 3) {
option3();
}
}
return(EXIT_SUCCESS);
void option1()
{
printf("Enter image filename: ");
scanf("%s", fileName);
img = readpic(fileName);
printf("By how much would you like to change the brightness?\n");
scanf("%d", &brightness);
addtopixels(img,brightness);
writeoutpic("out1.pgm",img);
free(img);
img = NULL;
}
The error I'm getting is the following:
[Linker error] undefined reference to 'readpic'
Then where it says readpic is has a bunch of lines where it says the same for things like 'addtopixels', 'setImage', etc.
Does anybody know what might be going wrong?
