1 Question- Hello World Program in C language. Answer- #include <stdio.h> #include <conio.h> void main() { //printf() function is used to display string on output screen. //printf() function definition is define in stdio.h header file printf("Hello, World!"); return 0;} C Programming class
2 Question- Write a c program for input an integer number from user and display its value. Answer- #include <stdio.h> void main() { int number; printf("Enter an integer: "); // reads and stores input scanf("%d", &number); // displays output printf("You entered: %d", number); }
3 Question- Write a c program for input a float number from user and display its value. Answer- #include <stdio.h> void main() { float number; printf("Enter an integer: "); // reads and stores input scanf("%f", &number); // displays output printf("You entered: %f", number); }
4 Question- Write a c program for input two integer number from user and display both value. Answer- #include <stdio.h> void main() { int num1,num2; printf("Enter two integer: "); // reads and stores input scanf("%d%d", &num1,&num2); // displays output printf("You entered 1st number is: %d \t and 2nd number is %d", num1,num2); } Learn Programming Language: CSDT Centre
5 Question- Write a c program for input two floating point number from user and display both value. Answer- #include <stdio.h> void main() { float num1,num2; printf("Enter two Float Numbers: "); // reads and stores input scanf("%f%f", &num1,&num2); // displays output printf("You entered 1st number is: %f \t and 2nd number is %f", num1,num2); } Learn Programming Language: CSDT Centre
6 Question- Write a c program for input a character from user and display its value. Answer- #include <stdio.h> void main() { char ch; printf("Enter an character: "); scanf("%c", &ch); // displays output printf("You entered: %c", ch); }
7 Question- Write a c program for input two integer number from user and display sum. Answer- #include <stdio.h> void main() { int num1,num2,s; printf("Enter two integer: "); scanf("%d%d", &num1,&num2); printf("You entered 1st number is: %d \t and 2nd number is %d\n", num1,num2); s=num1+num2; printf("Sum is %d",s); } Learn Programming Language: CSDT Centre
8 Question- Write a c program for input two integer number from user and display its subtraction, multiplication, division and reminder. Answer- #include <stdio.h> void main() { int num1,num2; printf("Enter two integer: "); scanf("%d%d", &num1,&num2); printf("You entered 1st number is: %d \t and 2nd number is %d", num1,num2); printf("\n Subtraction is %d",(num1-num2)); printf("\n Multiplication is %d",(num1*num2)); printf("\n Division is %d",(num1/num2)); printf("\n Reminder is %d",(num1%num2)); } Learn Programming Language: CSDT Centre
9 Question- Write a C Program to find the ASCII value of a character. Answer- #include <stdio.h> void main() { char c; printf("Enter a character: "); scanf("%c", &c); // %d displays the integer value of a character // %c displays the actual character printf("ASCII value of %c = %d", c, c); } Output: Enter a character: A ASCII value of A is = 65
10 Question- Write a C Program to find size of Variable or datatype. Answer- #include<stdio.h> void main() { int i; float f; double d; char c; // sizeof evaluates the size of a variable printf("Size of int: %zu bytes\n", sizeof(i)); printf("Size of float: %zu bytes\n", sizeof(f)); printf("Size of double: %zu bytes\n", sizeof(d)); printf("Size of char: %zu byte\n", sizeof(c)); } Output: Size of int: 4 bytes Size of float: 4 bytes Size of double: 8 bytes Size of char: 1 byte
11 Question- Write a C Program to enter 2 number and swap its value. Answer- #include<stdio.h> void main() { int n1,n2,T; printf("Enter two Numbers\n"); scanf("%d%d",&n1,&n2); printf("Enter 1st number is %d",n1); printf("Enter 2nd number is %d",n2); T=n1; n1=n2; n2=T; printf("After Swap 1st number is %d",n1); printf("After Swap 2nd number is %d",n2); }
12 Question- Write a C Program to enter 2 number and swap its value without using third variable. Answer- #include<stdio.h> void main() { int n1,n2; printf("Enter two Numbers\n"); scanf("%d%d",&n1,&n2); printf("Enter 1st number is %d",n1); printf("Enter 2nd number is %d",n2); n1=n1+n2; n2=n1-n2; n1=n1-n2; printf("After Swap 1st number is %d",n1); printf("After Swap 2nd number is %d",n2); }
13 Question- Write a C Program to enter cost of a pen from user and find similar 10 pen cost with 10 percentage discount. . Answer- #include<stdio.h> void main() { int pen,Ten_Pen,dis,PayAmt; printf("Enter Cost of Pen.\n"); scanf("%d",&pen); Ten_Pen=10*pen; dis=(Ten_Pen)*10/100; PayAmt=Ten_Pen-dis; printf("One Pen Cost is %d",pen); printf("\n Ten Pen Cost is %d",Ten_Pen); printf("\n Discount Cost is %d",dis); printf("\n paying Pen Cost is %d",Pay_Amt); }
14 Question- Write a C Program to enter radius of circle and find AREA . Answer- #include <stdio.h> void main() { float radius, area; printf("Enter the radius of a circle\n"); scanf("%f", &radius); area = 3.14159*radius*radius; printf("Area of the circle = %.2f\n", area); }