Editing INTERCAL (section)

=== Hello, world ===
The traditional [[Hello world program|"Hello, world!" program]] demonstrates how different INTERCAL is from standard programming languages. In [[C (programming language)|C]], it could read as follows:

<syntaxhighlight lang="c">
#include <stdio.h>

int main(void) {
    printf("Hello, world!\n");

    return 0;
}
</syntaxhighlight>

The equivalent program in C-INTERCAL is longer and harder to read:

<syntaxhighlight lang="basic">
DO ,1 <- #13
PLEASE DO ,1 SUB #1 <- #238
DO ,1 SUB #2 <- #108
DO ,1 SUB #3 <- #112
DO ,1 SUB #4 <- #0
DO ,1 SUB #5 <- #64
DO ,1 SUB #6 <- #194
DO ,1 SUB #7 <- #48
PLEASE DO ,1 SUB #8 <- #22
DO ,1 SUB #9 <- #248
DO ,1 SUB #10 <- #168
DO ,1 SUB #11 <- #24
DO ,1 SUB #12 <- #16
DO ,1 SUB #13 <- #162
PLEASE READ OUT ,1
PLEASE GIVE UP
</syntaxhighlight>