code. compile. run. debug. share.
#include <stdio.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int main() {
int fd = open("main.c", O_RDONLY);
struct stat sb;
fstat(fd, &sb);
char *addr = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
printf("Mapped %zd bytes of main.c into memory at %p\n", sb.st_size, addr);
int lines = 0;
for (int i = 0; i < sb.st_size; i++) {
if (addr[i] == '\n') {
lines++;
}
}
printf("There are %d lines in main.c\n", lines);
munmap(addr, sb.st_size);
return 0;
}
Compiling Program...
Standard Input:
Interactive Console
Text
Program is not being debugged. Click "Debug" button to start program in debug mode.
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