Byte « read « C File Q&A

1. Reading numbers from file in C    stackoverflow.com

I am primarily a Python programmer, but I've been working with C because Python is too slow for graphics (20 fps moving fractals FTW). I'm hitting a sticking point though... I wrote ...

2. C program To read 1000 bytes at a time from a File    bytes.com

can any one help me to solve this one we need to write a c program, Consider a file of size 5000 bytes. Open the file and read to a buffer of size buf[1000]; We have to read 1000 bytes only from the file at a time and after displaying the file we have to lseek 500 bytes back in the ...

3. Help reading a jpeg file into frames of 100 bytes!! :S    cboard.cprogramming.com

#include int main (void) { unsigned char frame[100], plz; int i; FILE *cfPtr; if((cfPtr = fopen("C:/Documents and Settings/photo1.jpg", "rb") == NULL)) { printf("File could not be opened\n"); scanf("%d\n\n", &plz); } else { while (!feof(cfPtr)) { for(i = 1; i <= 100; i++) { fread(&frame[i], sizeof(char),1,cfPtr); printf("%d\n", frame[i]); scanf("%d\n\n", &plz); } } fclose(cfPtr); } return 0; }

4. read 2 bytes from a file...    cboard.cprogramming.com

#include #include int main(void) { char filename[] = "file.txt"; unsigned char buf[1000]; FILE *fp; if ((fp = fopen(filename, "rb")) == NULL) { printf("Unable to open file: %s\n", filename); return EXIT_FAILURE; } if (fread(buf, 1, 3, fp) == 3) { num_of_sections = buf[2] << 8 | buf[1]; /* num_of_sections = buf[1] << 8 | buf[2]; */ } fclose(fp); return 0; ...

5. Max number of bytes for a read file    cboard.cprogramming.com

6. Read Bytes From File Into Integer    cboard.cprogramming.com

What are you talking about exactly? If you write an int to the file, read an int to the file and use sizeof(int). If you write a short to the file then read a short to the file and use sizeof(short). If you have an int (and int is 4 bytes on your system) then writing 2 bytes of the integer ...

7. files > 65535 bytes wont read in dos    cboard.cprogramming.com

Hello, I hope you can welcome one more newbie into the ranks! For practice I've been trying to make a program (16bit dos) that reads each byte in a file. I've set up an array of 256 elements...array[256] and each time that byte comes up I add one to the corresponding element in the array. Like I said its just for ...