1. C program help!
2. ==> use open(),(read(),lseek(),write(),close()

// you need to complete this function // fd: file descriptor passed by the main function // name: string for the file name int convertToUpper(int fd, const char* name) {

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int main() {

int i, cnt, fd, nread; off_t fileSize; char temp[500]; fd = open("data.txt", O_RDWR); fileSize = lseek(fd, (off_t)0, SEEK_END); lseek(fd, (off_t)0, SEEK_SET); cnt = convertToUpper(fd, "data.txt"); lseek(fd, (off_t)0, SEEK_SET); nread = read(fd, temp, 500); for(i=0; i