Download C Programming: Mastering Arithmetic Operations, Grades, and Array Manipulation and more Lecture notes Computer science in PDF only on Docsity!
- Write a C program to obtain the percentage and convert them into grades using else-if ladder statement.
/* C Program to classify the grades based on percentage obtained and print the same */ #include<stdio.h> main() { float percentage; printf("Enter the score of a student:\n"); scanf("%f",&percentage); if(percentage>100) printf("Invalid Score"); else if(percentage>90) printf("S Grade"); else if(percentage>80) printf("A Grade"); else if(percentage>70) printf("B Grade"); else if(percentage>60) printf("C Grade"); else if(percentage>50) printf("D Grade"); else if(percentage>=40) printf("E Grade"); else printf("Fail"); } Output:
Case 1: Enter the score of a student:
S Grade Case 2: Enter the score of a student:
Invalid Score Case 3: Enter the score of a student:
Fail
- Write a Menu based C program to implement all the arithmetic operations.
/Program to perform all the arithmetic operations using switch statement where the case values are characters/ #include<stdio.h> main() { char ch; int num1,num2; printf(โ+. Addition\n-:Subtraction\n:Multiplication\n/:Division\nโ); printf("Enter the two numbers to perform any arithmetic operation\n"); scanf("%d%d",&num1,&num2); printf(โ+. Addition\n-:Subtraction\n:Multiplication\n/:Division\nโ); printf("Enter a character value\n"); scanf(" %c",&ch); switch(ch) { case '+': printf("The addition result is %d \n",num1+num2); break; case '-': printf("The subtraction result is %d\n",num1-num2); break; case '': printf("The multiplication result is %d\n", num1 num2); break; case '/': if(num2==0) printf("Cannot divide a number by zero"); else { printf("The division result is %f\n",(float)num1/num2); } break; default: printf("Invalid choice"); } }
- Write a C program to swap two numbers using a function.
/C program to swap two numbers using functions/ #include<stdio.h> void swap(int,int); main() { int n1, n2; printf("Enter first number:\n"); scanf("%d",&n1); printf("Enter second number:\n"); scanf("%d",&n2); printf("The numbers before exchanging are:\n"); printf("First number : %d\nSecond number : %d\n",n1,n2); swap(n1,n2); }
void swap(int num1,int num2) { num1=num1+num2; num2=num1-num2; num1=num1-num2; printf("The numbers after exchanging are:\n"); printf("First number : %d\nSecond number : %d\n",num1,num2); }
- Write a program in C to print the first N Fibonacci sequence.
/*C program to find first N fibonacci sequence */ #include<stdio.h> void fib(int,int,int); main() { int f1=0,f2=1,n; printf("Enter the limit:\n"); scanf("%d",&n); fib(f1,f2,n); }
void fib(int f1,int f2,int n) { int f3,i; printf("The first %d Fibonacci Sequence is:\n",n); printf("%d\n%d\n",f1,f2); i=3; while(i<=n) { f3=f1+f2; f1=f2; f2=f3; printf("%d\n",f3); i++; } }
- Write a C program to print the square of array elements.
/Write a C program to print the square of array elements/ #include<stdio.h> void square(int a[],int n) { int square,i; for(i=0;i<n;i++) { square=a[i]*a[i]; printf("The square of %d = %d\n",a[i],square); } } main() { int a[20],n,i; printf("Enter the array limit:\n"); scanf("%d",&n); printf("Enter array elements:\n"); for(i=0;i<n;i++) { scanf("%d",&a[i]); } square(a,n);
}
- Write a menu-based program to calculate the areas of different Geometrical figures implementing functions.
/Write a menu-based program to calculate the areas of different geometrical figures implementing functions/ #include<stdio.h> #define pi 3. float circle(float radius) { float area=piradiusradius; return area; } float rectangle(float length,float breadth) { float area=lengthbreadth; return area; } float triangle(float base,float heigth) { float area=0.5baseheigth; return area; } float square(float side) { float area=sideside; return area; } main() { int ch; float radius,length,breadth,base,height,side; printf("******MENU******\n"); printf("1.Area of Circle\n2.Area of Rectangle\n3.Area of triagnle\n4.Area of Square\n"); printf("Enter your choice\n"); scanf("%d",&ch); switch(ch) { case 1:printf("Enter radius of a circle\n"); scanf("%f",&radius); float res1=circle(radius); printf("The area of circle is : %.2f",res1); break;
- Program to find the greater of two numbers using functions in C.
/Program to find the number is positive or negative using functions in C/ #include<stdio.h> int greatest(int,int); main() { int n1,n2,res; printf("Enter first number\n"); scanf("%d",&n1); printf("Enter second number\n"); scanf("%d",&n2); res=greatest(n1,n2); if(res==1) printf("%d is greater than %d",n1,n2); else printf("%d is greater than %d",n2,n1); } int greatest(int n1,int n2) { if(n1>n2) return 1; else return 0; }
10.Write a Menu based C Program to find the biggest and smallest element in an array /Write a Menu based C Program to find the biggest and smallest element in an array/ #include<stdio.h> main() { int a[20],i,n,ch,min,max; printf("Enter the limit\n"); scanf("%d",&n); printf("Enter the elements of an array\n"); for(i=0;i<n;i++) scanf("%d",&a[i]); printf(โMENU\nโ); printf(โ1.Miniimum in an array\n2.Maximum in an array\nโ); printf("Enter the choice\n"); scanf("%d",&ch); switch(ch) { case 1:min=a[0]; for(i=0;i<n;i++) { if(a[i]<min) { min=a[i]; } } printf("The smallest element in an array is %d",min); break; case 2:max=a[0]; for(i=0;i<n;i++) { if(a[i]>max) { max=a[i]; } } printf("The largest element in an array is %d",max); break; default:printf("Invalid Choice"); } }
- Write a C Program to demonstrate string built in functions in C.
/Write C Program to demonstrate String built in functions in C/ #include<stdio.h> #include<string.h> main() { char str1[20],str2[20]; int count; printf("Enter the first string\n"); scanf("%s",str1); count=strlen(str1); printf("The length of a string %s is %d\n",str1,count); strupr(str1); printf("The string in uppercase is %s\n",str1); strlwr(str1); printf("The string in lowercase is %s\n",str1); strcpy(str2,str1); printf("The copied string is %s\n",str2); }
13.Write C Program to demonstrate String built in functions in C.
/Write C Program to demonstrate String built in functions in C/ #include<stdio.h> #include<string.h> main() { char str1[20],str2[20]; int res; printf("Enter the first string\n"); scanf("%s",str1); printf("Enter the first string\n"); scanf("%s",str2); res=strcmp(str1,str2); printf("The result is %d\n",res); if(res==0) printf("The strings are equal\n"); else if(res==1) printf("%s is bigger than %s\n",str1,str2); else printf("%s is smaller than %s\n",str1,str2);
strcat(str1,str2); printf("The concatenated string is %s\n",str1); strrev(str1); printf("The reversed string is %s\n",str1); }
