University:
College
Course:
College Computer Science
Academic year:

2023
Views:

188

Pages:

12
Author:

Jemin K.

1.write a program to function xstrlen() to count the number of characters in a string . #include #include int main() { char str[]="jemin"; int len=strlen(str); printf("length of string is: %d", len); return 0; } OUTPUT: 2.write a program to function xstrlwr() to convert a string to lowercase . #include #include int main() { char str[]="jemin"; char *pointer=strlwr(str); printf("string in lower case is: %s", pointer); return 0; } OUTPUT: 3.write a program to function xstrupr() to convert a string to upper case . #include #include int main() { char str[]="jemin"; char *pointer=strupr(str); printf("string in upper case is: %s", pointer); return 0; } OUTPUT: 4.write a program to function xstrcpy() to convert a string in to another. #include #include int main() { char str[]="jemin"; char str1[100]; strcpy(str1,str); printf("copied string is: %s", str1); return 0; } OUTPUT: 5.write a program to check whether ist even or odd for 4 types of user defined function . 5-1. Function with no arguments and no return value #include void even_or_odd() { int n; printf("enter a number:\n"); scanf("%d", &n); if (n % 2 == 0) { printf("number is even"); } else { printf("number is odd"); } } int main() { even_or_odd(); return 0; } OUTPUT: 5-2. Function with no arguments and a return value #include int even_or_odd() { int n; printf("enter a number:\n"); scanf("%d", &n); if (n % 2 == 0) { return 1; } else { return 0; } } int main() { int result; result=even_or_odd(); if(result==1) { printf("number is even"); } else { printf("number is odd"); } return 0; } OUTPUT: 5-3. Function with arguments and no return value #include void even_or_odd(int num) { if (num % 2 == 0) { printf("number is even"); } else { printf("number is odd"); } } int main() { int n; printf("enter a number:\n"); scanf("%d", &n); even_or_odd(n); return 0; } OUTPUT: 5-4. Function with arguments and return value #include int even_or_odd(int num) { if (num % 2 == 0) { return 1; } else { return 0; } } int main() { int n, result; printf("enter a number:\n"); scanf("%d", &n); result = even_or_odd(n); if (result == 1) { printf("number is even"); } else { printf("number is odd"); } return 0; } OUTPUT: