#include <stdio.h>
int main() {
  FILE *f_ptr;
  char f_content[256];
  char output[512];

  f_ptr = fopen("/tmp/1337", "r");
  fgets(f_content, 256, f_ptr);

  fclose(f_ptr);

  sprintf(output, "File content: %s", f_content);
  printf("%s", output);

  return 0;
}

package main
import (
    "fmt"
    "io/ioutil"
)
func main() {
  b, _ := ioutil.ReadFile("/tmp/1337")
  output := "File content: " + string(b)
  fmt.Print(output)
}

file = open('/tmp/1337', 'r')

output = "File content: " + file.read()
print(output)

file.close()