Output pgm file not displaying correctly

[kankasunanda]

Attached my error image and Below attached is my code. I am not getting correct images for disp1 and dips2...Please help me to get excat .pgm images

string f1="D:\UMKC_MS\NIU\DIP\Image\BARAL.pgm";
string f2="C:\Users\SUNANDA\Documents\Visual Studio 2012\Projects\DIP_log\DIP_log\w1.pgm";
cimg_library::CImg image1;
image1.load(f1.c_str());
cimg_library::CImgDisplay disp1(image1, "Input" );
cimg_library::CImg image2;
image2.load(f2.c_str());
cimg_library::CImgDisplay disp2(image2, "Output" );

//start event loop
while(true) {
//All the interactive code is inside the event loop
cimg_library::CImgDisplay::wait(disp1, disp2);
}