Need help manipulating ppm files based on the functions below:

readPic - read the image into the structure (allocate space)

rotate - rotate by 90 degrees

#include  #include  #include  #include "ppm.h" ppmPic *readPic(char *fileName) { return NULL; } void writePic(ppmPic *myPic, char *fileName) { return; } ppmPic *rotateLeft(ppmPic *thePic) { return; } ppmPic *rotateRight(ppmPic *thePic) { return; } ppmPic *flipHorizontal(ppmPic *thePic) { return; } ppmPic *flipVertical(ppmPic *thePic) { return; } ppmPic *duplicate(ppmPic *thePic) { return; }

MAIN:

#include  #include  #include  #include "ppm.h" //////////////////////////////////////////////////////////////////////////////////////////////// int main(int argc, char **argv) { ppmPic *origPic, *newPic; if (argc != 3) { printf("Usage: ./a.out  ppm-file "); return 1; } printf("reading the original image... "); origPic = readPic(argv[2]); if (origPic == NULL) { printf("File %s could not be read ", argv[2]); return 1; } if (strcmp(argv[1], "rotateLeft") == 0) { printf("rotating the image to the left... "); newPic = rotateLeft(origPic); writePic(newPic, argv[2]); } else if (strcmp(argv[1], "rotateRight") == 0) { printf("rotating the image to the right... "); newPic = rotateRight(origPic); writePic(newPic, argv[2]); } else if (strcmp(argv[1], "flipVertical") == 0) { printf("flipping the image vertically... "); newPic = flipVertical(origPic); writePic(newPic, argv[2]); } else if (strcmp(argv[1], "flipHorizontal") == 0) { printf("flipping the image horizontally... "); newPic = flipHorizontal(origPic); writePic(newPic, argv[2]); } else if (strcmp(argv[1], "invert") == 0) { printf("inverting the image... "); newPic = invert(origPic); writePic(newPic, argv[2]); } else if (strcmp(argv[1], "duplicate") == 0) { printf("duplicating the image... "); newPic = duplicate(origPic); writePic(newPic, argv[2]); } else { printf("%s is an invalid option... ", argv[1]); } return 0; 

PPM.H:

#include  #include  #include  //////////////////////////////////////////////////////////////////////////////////////////////// #ifndef RGB_STRUCT #define RGB_STRUCT typedef struct pixel { int red; // red value int green; // green value int blue; // blue value } Pixel; #endif //////////////////////////////////////////////////////////////////////////////////////////////// #ifndef PPM_STRUCT #define PPM_STRUCT typedef struct ppm { int rows; // number of rows int cols; // number of columns int colors; // number of colors Pixel **pixels; // the actual pixel data } ppmPic; #endif //////////////////////////////////////////////////////////////////////////////////////////////// ppmPic *readPic(char *); void writePic(ppmPic *, char *); ppmPic *rotateLeft(ppmPic *); ppmPic *rotateRight(ppmPic *); ppmPic *flipHorizontal(ppmPic *); ppmPic *flipVertical(ppmPic *); ppmPic *invert(ppmPic *); ppmPic *duplicate(ppmPic *); ////////////////////////////////////////////////////////////////////////////////////////////////

#include #include #include #include "ppn.h" int main (int argc, char The code below is found the files ppm.h and main.c **argv) { These files should NOT be modified. You are to write ppm.c, which contains implementations for the eight functions defined in ppm.h (readPic, writePic, rotateLeft, rotateRight, flipVertical, flipHorizontal, invert and duplicate) if (argc != 3) { printf("Usage: ./a.out ppm-fileln") return 1; printf("reading the original imagen" origPic-readPic (argv [2]) if (origPicNULL) printf ("File s cannot be readIn", argv [2]) return 2; #include #include #include if (strcmp (argv[1], "rotateLeft") 0) { - #ifndef RGB STRUCT #define RGB STRUCT typedef struct pixel ( printf("rotating the image to the left...In") newPic = rotateLeft (origPic) ; writePic (newPic, argv[2]) else (str?p (argv [1], "rotateRight") 0) { if printf(" rotating the image to the right..n" newPic = rotateRight (origPic) ; writePic (newPic, argv[2]) int red; / red value - int green; // green value int blue I/ blue value Pixel; #endif else if (stremp (argv1], "ElipVertical"0) #ifndef PPM STRUCT #define PPM STRUCT typedef struct ppm ( printf( flipping the image vertically. . . "): newPic-flipvertical (origPic) writePic (newPic, argv[2]) // numbe of rows / numbe of columns // number of colors else (str?p (argv [1], "flipHorizontal") 0) if printf("flipping the image horizontally. . .In") newPic flipHorizontal (OrigPic) ; writePic (newPic, argv[2]) { int rows; int cols; int colors; Pixel *pixels II the actual pixel data - ppmPic; #endif else if (strcmp(argv[1], "invert-0) printf("inverting the image. n") newPc = invert (origPic) ; writePic (newPic, argv[2]) ppmPic *readPic (char *); void writePic (ppmPic, char *) PpmPic *rotateLeft (ppmPic *) PpmPic *rotateRight (ppmPic *) ppmPic *flipHorizontal (ppmPic ppmPic *flipvertical (ppmPic *) ppmPic *invert (ppmPic*) else "duplicate") 0) { if printf ("duplicating the image. .In" newPieduplicate (origPic); writePic (newPic, argv[2]) (str?p (argv [1], -_ else ( ic *duplicate ( ict printf("%s is invalid option. ", argv [1]); an return 0 #include #include #include #include "ppn.h" int main (int argc, char The code below is found the files ppm.h and main.c **argv) { These files should NOT be modified. You are to write ppm.c, which contains implementations for the eight functions defined in ppm.h (readPic, writePic, rotateLeft, rotateRight, flipVertical, flipHorizontal, invert and duplicate) if (argc != 3) { printf("Usage: ./a.out ppm-fileln") return 1; printf("reading the original imagen" origPic-readPic (argv [2]) if (origPicNULL) printf ("File s cannot be readIn", argv [2]) return 2; #include #include #include if (strcmp (argv[1], "rotateLeft") 0) { - #ifndef RGB STRUCT #define RGB STRUCT typedef struct pixel ( printf("rotating the image to the left...In") newPic = rotateLeft (origPic) ; writePic (newPic, argv[2]) else (str?p (argv [1], "rotateRight") 0) { if printf(" rotating the image to the right..n" newPic = rotateRight (origPic) ; writePic (newPic, argv[2]) int red; / red value - int green; // green value int blue I/ blue value Pixel; #endif else if (stremp (argv1], "ElipVertical"0) #ifndef PPM STRUCT #define PPM STRUCT typedef struct ppm ( printf( flipping the image vertically. . . "): newPic-flipvertical (origPic) writePic (newPic, argv[2]) // numbe of rows / numbe of columns // number of colors else (str?p (argv [1], "flipHorizontal") 0) if printf("flipping the image horizontally. . .In") newPic flipHorizontal (OrigPic) ; writePic (newPic, argv[2]) { int rows; int cols; int colors; Pixel *pixels II the actual pixel data - ppmPic; #endif else if (strcmp(argv[1], "invert-0) printf("inverting the image. n") newPc = invert (origPic) ; writePic (newPic, argv[2]) ppmPic *readPic (char *); void writePic (ppmPic, char *) PpmPic *rotateLeft (ppmPic *) PpmPic *rotateRight (ppmPic *) ppmPic *flipHorizontal (ppmPic ppmPic *flipvertical (ppmPic *) ppmPic *invert (ppmPic*) else "duplicate") 0) { if printf ("duplicating the image. .In" newPieduplicate (origPic); writePic (newPic, argv[2]) (str?p (argv [1], -_ else ( ic *duplicate ( ict printf("%s is invalid option. ", argv [1]); an return 0