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What Grade do you need to get a B in Maths Int 2 Exam?
555
Write a program to divide 2 numbers without using the division operator?
int divide1(int a,int b) { int t=1; while(b*t<=a) { t++; } return t-1; }
Give an example to show that if A union B and A intersection B be given then A and B may not be uniquely determined?
The set A union B can be decomposed into three disjoint sub sets A\ (A int B), B\(A int B), and (A int B). So in this case (A union B) and (A int B) are fixed but "moving" elelments from A\ (A int B) into B\(A int B) will not affect (A union B) and (A int B). You should be able to fill in the details now.
Q5 Write a program to implement a calculator to perform all the four basic arithmetic operations on integers?
#include <stdlib.h> #include <stdio.h> #include <conio.h> int sum(int, int); int sub(int, int); int mul(int, int); int div1(int, int); int main() { int a,b,d; int ch; printf("\t\tCalculator Implementation\n"); printf("\t\t~\n"); printf("\t\t 1: Add\n"); printf("\t\t 2: Sub\n"); printf("\t\t 3: Multiply\n"); printf("\t\t 4: Divide\n"); printf("\t\t 5: Exit\n\n\n"); printf("\t\t Enter the choice: "); scanf("%d", &ch); if(ch==5) exit(0); printf("\nEnter first number: "); scanf("%d", &a); printf("\nEnter Second number: "); scanf("%d", &b); printf("\na = %d; b = %d;\n", a, b); printf("==============\n\n"); switch(ch) { case 1 : d=sum(a,b); printf("Sum %d + %d = %d",a,b,d); break; case 2: d=sub(a,b); printf("Subtraction %d - %d = %d",a,b,d); break; case 3: d=mul(a,b); printf("Multiplication %d * %d = %d",a,b,d); break; case 4 : d=div1(a,b); printf("Division %d / %d = %d",a,b,d); break; default: printf("Invalid Choice!"); getch(); } getch(); return 0; } int sum(int a, int b) { return a + b; } int sub(int a, int b) { return a - b; } int mul(int a, int b) { return a * b; } int div1(int a, int b) { return a / b; }
C program to print all combinations of a 4-digit number?
#include<stdio.h> int main() { int a,b,c,d; for(a=1; a<5; a++) { for(b=1; b<5; b++) { for(c=1; c<5; c++) { for(d=1; d<5; d++) { if(!(a==b a==c a==d b==c b==d c==d)) printf("dd\n",a,b,c,d); } } } } return 0; }
