1. This program will print 1 to 100 without using any loop and recursion.

#include<stdio.h>
int i;
void b(){
printf("%d\n",i++);}
void c(){
b(),b(),b(),b(),b();}
void a(){
c(),c(),c(),c(),c();}
void main(){
i=1;
a(),a(),a(),a();
}

2. Print hello without using any semicolon in the program.

1st method:

#include<stdio.h>
void main(){
switch(printf("hello")) {}
}

2nd method:

#include<stdio.h>
#define PRINT printf("hello")
void main(){
if(PRINT){}
}

3rd method:

#include<stdio.h>
void main(){
while(!printf("hello")){}

3.Program to print "Hello Quora" using if and else both statement.

#include <stdio.h>
void main(){
if(!printf("Hello "));
else printf("Quora\n");
}

4. C Program to print source code as program output

#include <stdio.h>
int main(void){
FILE *fp;
char c;
fp = fopen(__FILE__, "r");
do { c=fgetc(fp); putchar(c); }
while(c!=EOF); fclose(fp);
return 0;
}

Output (above source code is output):