C Programming Codes

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Program to check whether a number is even or odd ----------------------------------------------------- Program: #include<stdio.h> int main () { int a; printf("Enter a number:"); scanf("%d",&a); if(a%2==0) printf("%d is an even number",a); if(a%2!=0) printf("%d is a odd number",a); return 0; } ----------------------------------------------------- #if_statement

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Program to check whether entered number is positive, negative or zero using if statement ---------------------------------------------------- Program: #include<stdio.h> int main () { int a; printf("Enter a number:"); scanf("%d",&a); if(a>0) printf("%d is a positive number",a); if(a==0) printf("%d is neither positive nor negative",a); if(a<0) printf("%d is a negative number",a); return 0; } ---------------------------------------------------- #ifstatement

Program to check vote eligibilty using if statement ----------------------------------------------------- Program: #include<stdio.h> int main() { int a; printf("Enter your age:"); scanf("%d",&a); if(a>=18) { printf("Your age is %d you are eligible to vote",a); } if(a<18) { a=18-a; printf("You should wait %dyrs for eligibilty",a); } return 0; } ---------------------------------------------------- #if_statement

Program to convert floating point number into int. ---------------------------------------------------- Program: #include<stdio.h> int main() {float a; int b; printf("enter floating point number:"); scanf("%f",&a); b=(int)a; printf("%d",b); return 0; } ---------------------------------------------------- #basicprograms

Program to know the size of data type ---------------------------------------------------- Program: #include<stdio.h> int main() { printf("Size of int:%d bytes\n",sizeof(int)); printf("Size of float:%d bytes\n",sizeof(float)); printf("Size of char:%d bytes\n",sizeof(char)); printf("Size of double:%d bytes\n",sizeof(double)); return 0; } ---------------------------------------------------- #basicprograms

Program to calculate average of two numbers and print their deviation ---------------------------------------------------- Program: #include<stdio.h> int main() {int a,b; float avg,d1,d2; printf("Enter first number="); scanf ("%d",&a); printf("Enter second number="); scanf("%d",&b); avg=(a+b)/2; d1=a-avg; d2=b-avg; printf("Average=%.2f\n",avg); printf("Deviation of 1st number (i.e %d) is=%.2f",a,d1); printf("\nDeviation of 2nd number (i.e %d) is=%.2f",b,d2); return 0; } ----------------------------------------------------

Program to swap two numbers without using third variable ---------------------------------------------------- Program: #include<stdio.h> int main() {int a,b; printf("Enter a="); scanf ("%d",&a); printf("Enter b="); scanf("%d",&b); printf("Before Swapping:\n"); printf("a=%d\nb=%d",a,b); a=a+b; b=a-b; a=a-b; printf("\nAfter Swapping:"); printf("\na=%d\nb=%d",a,b); return 0; } ----------------------------------------------------

Program to swap two numbers using third variable ---------------------------------------------------- Program: #include<stdio.h> int main() {int a,b,temp; printf("Enter a="); scanf ("%d",&a); printf("Enter b="); scanf("%d",&b); printf("Before Swapping:\n"); printf("a=%d\nb=%d",a,b); temp=a; a=b; b=temp; printf("\nAfter Swapping:"); printf("\na=%d\nb=%d",a,b); return 0; } ---------------------------------------------------- #basicprograms

Program to print digit at one's place -------------------------------------------------------- Program: #include<stdio.h> int main() {int num,digit; printf("Enter any number:"); scanf ("%d",&num); digit=num%10; printf("The digit at one's place of %d is %d",num,digit); return 0; } ---------------------------------------------------------- #basicprograms

Program to accept lower case character and print it in uppercase ---------------------------------------------------- Program: #include<stdio.h> int main() {char ch; printf("Enter any character(Lower case):"); scanf("%c",&ch); printf("Upper case character= %c",ch-32); return 0; } ---------------------------------------------------- #basicprograms

Program to accept any Character in upper case and print it in lowercase. ---------------------------------------------------------- Program: #include<stdio.h> int main() {char ch; printf("Enter any character(Upper Case):"); scanf("%c",&ch); printf("Lower case character= %c",ch+32); return 0; } ---------------------------------------------------------- #basicprograms

Program to print asci value of the character: ---------------------------------------------------- #include<stdio.h> int main() {char ch; printf("Enter any character:"); scanf("%c",&ch); printf("The ascii value of %c is %d",ch,ch); return 0; } ---------------------------------------------------- #basicprograms

Program to calculate distance between two points. ----------------------------------------------------- #include<stdio.h> #include<math.h> int main() { float x1,x2,y1,y2,distance; printf("Enter coardinates of first point(x1,y1):\n"); scanf("%f%f",&x1,&y1); printf("Enter coordinates of second point(x2,y2):\n"); scanf("%f%f",&x2,&y2); distance=sqrt(pow((x2-x1),2)+pow((y2-y1),2)); printf ("Distance=%.2f",distance); return 0; } ----------------------------------------------------------- #basicprograms

6-Program to calculate area of triangle by Heron's formula: -------------------------------------------------------- #include<stdio.h> #include<math.h> int main() { float a,b,c,s,area; printf("Enter three sides of triangle:"); scanf("%f%f%f",&a,&b,&c); s=(a+b+c)/2; area=sqrt((s*(s-a)*(s-b)*(s-c))); printf("Area is = %.2f",area); return 0; } --------------------------------------------------------- #basicprograms