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C Notes

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Published in: C / C++ | Electronics | Embedded Systems
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A Simple C Code.

Vipul M / Mumbai

3 years of teaching experience

Qualification: B.Tech/B.E. (Solapur - 2014)

Teaches: IoT Certifications, Computer Science, Computer, Electronics, IT, C / C++

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  1. 1) Printing "Hello" world at output screen #include int main() printf("Hello"); return 0; OUTPUT: Hello 2) Addition of number #include int main() int a=10; int b=20; int c; printf("Addition = %d",c); return 0; OUTPUT: Addition = 30 // header file // main program logic starts stars from here int -> data typa // printf function use to printing string on output // End of program // header file // main program logic starts stars from here int -> data typa //int -> variable declaration 3 types of variable // 1) integer 2) float 3)character // formulla // %d -> format specifier for int // End of program
  2. 2) Division of number #include int main() float a=10, float b=20, float c; printf("Division = %f",c); return O; OUTPUT: Division = 0.50000 4) Printing character #include int main() char x='A'; printf("Char = %c",x); return 0; OUTPUT: Char = A // header file // main program logic starts stars from here int -> data typa //float -> variable declaration 3 types of variable // 1) integer 2) float 3)character // formulla // %f -> format specifier for float // End of program // header file // main program logic starts stars from here int -> data typa //char -> variable declaration 3 types of variable // 1) integer 2) float 3)character // %c -> format specifier for int // End of program
  3. 5) For loop : using for loop print 1 to 10 number #include int main() int i; for(i=1;i
  4. 6) while loop : using for loop print 1 to 10 number #include int main() int i; while(i
  5. 7) if Condition #include int main() int i; if(i 1) printf("Condition is True"); // if condition is true it execute program in bracket return O; OUTPUT: Condition is True // End of program
  6. 8) if else Condition #include int main() int i; if(i 2) else printf("Condition is True"); printf("condition is False") return 0; OUTPUT: condition is false // End of program
  7. 9) Program to check given Number is greater than 50 or not #include int main() int a; printf("Enter Number = scanf("%d",&a); if(a < 50) printf("Number is Small"); else printf("numberis grether"); return 0; OUTPUT: Enter Number =12 Number is small // End of program
  8. 10)Program to check number is even or odd #include int main() int a,b; printf("Enter Number = scanf("%d",&a); if(b 0) printf("Number is EVEN"); else printf("number is ODD"); return 0; OUTPUT: Enter Number =12 Number is EVEN Enter Number =13 Number is ODD // End of program
  9. 11) switch case Select language using switch case #include int main() int a; printf("Enter 1:English 2:Marathi 3:Hindi\n "); scanf("%d",&a); switch(a) case 1: printf("Welcome to English"); break; case 2: printf("Welcome to Marathi"); break; case 3: printf("Welcome to Hindi"); break; default: printf("Wrong choice");
  10. return O; OUTPUT: Enter 1:English 2:Marathi 3:Hindi 2 Welcome to Marathi // End of program
  11. 12)Array Printing Array data #include int main() int a[5] = int i; printf("%d\n",a[i]); return 0; OUTPUT: 10 20 30 40 50 //array declaration // End of program
  12. 13)Program to take 5 number in array and print it #include int main() int a[5]; int i; //array declaration printf("Enter 5 Num."); scanf("%d",&a[i]); printf("%d\n",a[i]); return 0; OUTPUT: Enter 5 Num. 10 20 30 40 50 10 20 30 40 50 // End of program
  13. 14) Program to find large number in array #include int main() int a[5] = int i,large; large = a[O]; if(large
  14. 14) Program to find small number in array #include int main() int a[5] = int i,small; small = a[0]; if(small>a[i]) small = a[i]; printf("\n %d is small Number",small); //array declaration return 0; OUTPUT: 10 is small Number // End of program
  15. 15) Program to arrange array data in asending order #include int main() int a[5] = int i,j,t; if(a[i] > a[j]) t = a[i]; a[i] = a[j]; printf("%d\t",a[i]); //array declaration return O; OUTPUT: 10 20 30 50 60 // End of program
  16. 16) Program to arrange array data in desending order #include int main() int a[5] = int i,j,t; if(a[i] < a[j]) t = a[i]; a[i] = a[j]; printf("%d\t",a[i]); //array declaration return 0; OUTPUT: 60 50 30 20 10 // End of program
  17. 17) string Take string from user and print it on output screen #include int main() int str[10]; scanf("%s" &str); printf("%s",str); return 0; OUTPUT: Welcome Welcome //string declaration
  18. 18)Function Addition of number using function #include void add(); int main() add(); return 0; void add() int a=20; int b=30; int c; c = a+b; printf("Addition = %d",c); OUTPUT: Addition = 30 //Function decleration //Function call // Function call
  19. 19) Pointer #include int main() int x=10; int *p; printf("%u\n",p); printf("%d\n%d",*p,x); return O; OUTPUT: 2686648 10 10
  20. 20) Using pointer swapping #include int main() int x=10,y=20,z; int *pl,*p2,*p3; pi = p3 = &z, *p3=* 1 printf("x=%d\ny=%d" *pl,*p2); return 0; OUTPUT: x: 20 10
  21. 21) Pointer and Array Using pointer print number in array #include int main() int int *p,i; printf("%d\n",*p) return 0; OUTPUT: 10 20 30 40 50
  22. 22) Pointer and function 1) Area of trangle using simple function #include void area(); int float A; int main() area(); return O; void area() // function call // Function defination // area of trangle formula printf("Area of Trangle = %f ",A); 2) Area of trangle using Argument type function #include float area(int,int); int main() int float A; A = area(H,B); printf("Area of Triangle = return 0; float area(int X,int Y) float T; return T; // function call // Function defination // area of trangle formula
  23. #include float area(int,int); int main() int float A; A = area(H,B); printf("Area of Triangle = return O; float area(int X,int Y) float T; return T; 3) Area of triangle using pointer and function 0/0f Il, A), // function call // Function defination // area of trangle formula

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