{CODE } Instructions & Operators (Chapter 2)

 1. Type Declaration Instructions

#include<stdio.h>

int main() {

int age = 22;

int oldAge = age;

int newAge = oldAge + 2;

printf("new age is : %d", newAge);

int rupee = 1, dollar;

dollar = 74;

/*

order of declaration is important - Wrong Declaration Order

float pi = 3.14;

float area = pi * rad * rad;

float rad = 3;

*/

// valid declaration

int age1, age2, age3;

age1 = age2 = age3 = 22;

//invalid

//int a1 = a2 = a3 = 22;

return 0;

}

2. Arithmetic Instructions

#include<stdio.h>

int main() {

int a = 1, b = 2, c = 3;

//valid

a = b + c;

//invalid

// b + c = a;

printf("%d \n", 3 % 2);

printf("%d \n", -3 % 2);

return 0;

}

> Type Conversion

#include<stdio.h>

int main() {

printf("sum of 2 & 3 : %d", 2 + 3);

printf("sum of 2.0 & 3 : %f", 2.0 + 3);

printf("sum of 2.0 & 3.0 : %f", 2.0 + 3.0);

return 0;

}

> Associativity

#include<stdio.h>

int main() {

printf(" Output : %d", 5+2/2*3);

return 0;

}

3. Relational Operator

#include<stdio.h>

int main() {

printf("%d \n", 4==4);

printf("%d \n", 4<3);

printf("%d \n", 3<4);

printf("%d \n", 4<4);

printf("%d \n", 4<=4);

printf("%d \n", 4>3);

printf("%d \n", 3>4);

printf("%d \n", 4>4);

printf("%d \n", 4>=4);

printf("%d \n", 4!=4);

printf("%d \n", 3!=4);

return 0;

}

4. Logical Operator

#include<stdio.h>

int main() {

printf("%d \n", 3<4 && 3<5);

printf("%d \n", 3<4 && 5<4);

printf("%d \n", 3<4 && 5<4);

printf("%d \n", 3>4 && 5>4);

printf("%d \n", 3<4 && 3<5);

printf("%d \n", !(3<4 && 3<5));

printf("%d \n", !(4<3 || 5<3));

return 0;

}

5. Assignment Operator

# include <stdio.h>

int main() {

int a = 10;

a += 10;

printf("a+10 = %d \n", a);

a -= 10;

printf("a-10 = %d \n", a);

a *= 10;

printf("a*10 = %d \n", a);

a /= 10;

printf("a/10 = %d \n", a);

a %= 10;

printf("a%c10 = %d \n", '%', a);

return 0;

}