
#include<studio.h>int main (){int i;printf("Enter the number:\n");scanf("%d",&i);do{printf("%d",i);i++;} While (i<=40);return 0;}

#include<stdio.h>int main(){int i =10;char c='A';do{printf("%d",i);printf("%c",c);i--;}while(i<=5);return 0;}

#include<stdio.h>int main(){int i=10, j=20;char op;int result;do{printf("Enter any operator");scanf(" %c", &op);result=i+j;printf("%d%c%d=%d",i,op,j, result);i++;}while(i<=5);return 0;}

#include<stdio.h>int main(){int a,i=0;printf("enter value a");scanf("%d",&a);for(a>=6){printf("inavlid")}else{do{printf("%d",a);a++;}while(i<=5);return 0;}}