Question

1. Write a c statement to declare variables of primitive data types, and assign values to the variables.
2. Use common control structure in c, such as if, switch, break, for, while statements.
3. Write a c program that takes command line parameters, and perform some computation based on the command line input.
4. Write c statements to generate random number within a certain range.
5. Write a c statement to declare array variables of primitive data types, and assign values to the elements of array type variables.
6. Write a c statement to loop through an array to find a certain element, or the sum, maximum, minimum values of all array elements.
7. Read user input using scanf() function, and output contents of variables using printf() function.
8. Declare pointer type of variables, and set a pointer to the address of a variable, or certain element of an array.
9. Declare an array assign values to the entries in the array, display the values stored in the array.
10. Program using 2d arrays.

Answer 1

c statement to declare variables of primitive data types, and assign values to the variables

ans:

#include <stdio.h>

int main(){

int a=10;

float b=1.5;

char c='a';

char d[5]="hello";

double e=1.9393;

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

printf("b=%f\n",b);

printf("c=%c\n",c);

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

printf("e=%lf\n",e);

return 0;

}

Use common control structure in c, such as if, switch, break, for, while statements

ans:

#include <stdio.h>

int main(){

int i=0;

while(i<10){

if(i%2==0){

printf("even");

}else{

printf("odd");

}i++;

}

char a='d';

for(int i=0;i<10;i++)printf("%d ",i);

switch(a){

case 'a':

printf("\na is printed\n");break;

case 'd':

printf("\nd is printed\n");break;

default:

printf("\ndefault one is printed\n");

}

}

Write a c program that takes command line parameters, and perform some computation based on the command line input.

ans: which is product of 2 numbers

#include <stdio.h>

#include <stdlib.h>

int main(int argc, char *argv[]){

int a=atoi(argv[1]);

int b=atoi(argv[2]);

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

return 0;

}

Write c statements to generate random number within a certain range

ans:

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

int main(int argc, char *argv[]){

int max_num=56;

int min_num=12;

srand(time(0));

int random_num_range = (rand() % (max_num - min_num+ 1)) + min_num;

printf("%d\n",random_num_range);

return 0;

}

Write a c statement to declare array variables of primitive data types, and assign values to the elements of array type variables.

ans:

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

int main(int argc, char *argv[]){

int a[4]={1,2,5,4};

double b[3]={1.2,4.5,8.9};

char c[3]={'a','b','d'};

float d[4]={3.4,2.4,5.6,1.2};

return 0;

}

Write a c statement to loop through an array to find a certain element, or the sum, maximum, minimum values of all array elements.

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

int main(int argc, char *argv[]){

int a[6]={4,6,9,2,3,8};

int min_index=0,max_index=0,sum=0;

for(int i=0;i<6;i++){

if(a[i]<a[min_index]){

min_index=i;

}

if(a[i]>a[max_index]){

max_index=i;

}

sum=sum+a[i];

}

printf("minimum element: %d\n",a[min_index]);

printf("maximum element: %d\n",a[max_index]);

printf("sum of element: %d\n",sum);

}

Read user input using scanf() function, and output contents of variables using printf() function.

ans:

#include <stdio.h>

int main(int argc, char *argv[]){

printf("Enter number:");

int n;

scanf("%d",&n);

printf("You enter number is %d\n",n);

return 0;

}

Declare pointer type of variables, and set a pointer to the address of a variable, or certain element of an array.

ans:

#include <stdio.h>

int main(int argc, char *argv[]){

int a[4]={1,2,5,8};

int *ptr;

ptr=a;

for(int i=0;i<4;i++){

printf("%d\n",ptr[i]);

}

}

Declare an array assign values to the entries in the array, display the values stored in the array.

Program using 2d arrays.

ans:

#include <stdio.h>

int main(int argc, char *argv[]){

int a[2][3]={{1,4,6},{6,8,9}};

for(int i=0;i<2;i++){

for(int j=0;j<3;j++){

printf("%d ",a[i][j]);

}printf("\n");

}

}