Guys, is "c++ Primary" nice book to read?

yes

i have

i just started open cv with visual studio i downloaded opencv 4.5.2.my windows is x64.i followed by all the given below steps I ran the following code: #include<opencv2/imgcodecs.hpp> #include<opencv2/highgui.hpp> #include<opencv2/imgproc.hpp> #include<iostream> using namespace std; using namespace cv; string path = "ress/IMG_20200725_173121.jpg"; Mat img = imread(path); int main() { imshow("img", img); waitKey(1); return 0; } but still i am facing some problem: With some negative exceptions at 0x00007FFCB29F4B59 in opencv.exe: Microsoft C++ exception: cv::Exception at memory location 0x000000AB2B4FF730. i dont know what should I do as i am beginner in visual studio.

I don't think path is correct. In Windows use \\ for path separator

i just started open cv with visual studio i downloaded opencv 4.5.2.my windows is x64.i followed by all the given below steps I ran the following code: #include<opencv2/imgcodecs.hpp> #include<opencv2/highgui.hpp> #include<opencv2/imgproc.hpp> #include<iostream> using namespace std; using namespace cv; string path = "ress/IMG_20200725_173121.jpg"; Mat img = imread(path); int main() { imshow("img", img); waitKey(1); return 0; } but still i am facing some problem: With some negative exceptions at 0x00007FFCB29F4B59 in opencv.exe: Microsoft C++ exception: cv::Exception at memory location 0x000000AB2B4FF730. i dont know what should I do as i am beginner in visual studio.

i just started open cv with visual studio i downloaded opencv 4.5.2.my windows is x64.i followed by all the given below steps I ran the following code: #include<opencv2/imgcodecs.hpp> #include<opencv2/highgui.hpp> #include<opencv2/imgproc.hpp> #include<iostream> using namespace std; using namespace cv; string path = "ress/IMG_20200725_173121.jpg"; Mat img = imread(path); int main() { imshow("img", img); waitKey(1); return 0; } but still i am facing some problem: With some negative exceptions at 0x00007FFCB29F4B59 in opencv.exe: Microsoft C++ exception: cv::Exception at memory location 0x000000AB2B4FF730. i dont know what should I do as i am beginner in visual studio.

how to post links here?(

i had come across several notation of ptr == (void*) -1 in which ptr is of type void*, but I cannot find the meaning of casting -1 to void* online, and it seems that it is not the same as NULL / nullptr in c++

to show the answer on the question above. I've found it on stackoverflow

Anyone using CMake? How do i link .cpp files? I’ve done link_directories and add_executable but it doesn’t work, keeps yelling ld symbol not found 😕

file (GLOB_RECURSE SOURCES "*.cpp") add_executable(${PROJECT_NAME} ${SOURCES})

file (GLOB_RECURSE SOURCES "*.cpp") add_executable(${PROJECT_NAME} ${SOURCES})

you can write add_subdirectory(src) there, put CMakeLists.txt in src, and write the code above

run in debugger step by step and see where the exception throws

do you checked your image?

Error shows on Imshow function

Yes

Yes

Yes

what wrong with *ptr+1 ? while *(ptr+1) is showing correct output

what wrong with *ptr+1 ? while *(ptr+1) is showing correct output

isnt both same thing in context to "hello"

It probably more making sense by explaining it with [] style. So *ptr + 1 is actually ptr[0] + 1 And *(ptr + 1) is actually ptr[1] Does that make sense?

i got what it did bt in first case why its printing alphabets when i did *ptr+17 it prints "y" so my question is why its printing alphabets even tho we only assing a variable str which allocates memory for 4characters

What is data structures . I am a newbie

what is char?

Best language to learn data structures

charachter store in one byte of memory

Legends say there are architecture where char is 2 bytes

charachter store in one byte of memory