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Partb 1.Write a c program to find the length of string without using built in function #include void main() { char string[50]; int i, length = 0; printf("Enter a string \n"); gets(string); for (i = 0; string[i] != '\0'; i++) { length++; } printf("The length of a string is the number of characters in it \n"); printf("So, the length of %s = %d\n", string, length); } Output: Enter a string Sanfoundry The length of a string is the number of characters in it So, the length of Sanfoundry = 10 2.write a c program to demonstrate string functions. #include
#include int main() { char nickname[20]; printf("Enter your Nick name:"); scanf("%s", nickname); printf("%s",nickname); return 0; } Output: Enter your Nick name:Negan Negan 3.write a c program to demonstrate pointers in c. #include int main () { int var1; char var2[10]; printf("Address of var1 variable: %x\n", &var1 ); printf("Address of var2 variable: %x\n", &var2 ); return 0; } Output: Address of var1 variable: bff5a Address of var2 variable: bff5a3f
Enter the number to check prime: Number is prime 5.write a c program to read,display and to find the trace of a square matrix
include
main( ) { int a[10][10], m,i,j, sum; printf ("\n Enter order of the square matrix :") ; scanf ("%d", &m); printf ("\n Enter the matrix \n"); for( i=0; i
- write a c program to read,display and add two m x n matrices using function #include #include void main() { int a[2][3],b[2][3],c[2][3],i,j; clrscr(); printf("\nENTER VALUES FOR MATRIX A:\n"); for(i=0;i<2;i++) for(j=0;j<3;j++) scanf("%d",&a[i][j]); printf("\nENTER VALUES FOR MATRIX B:\n"); for(i=0;i<2;i++) for(j=0;j<3;j++) scanf("%d",&b[i][j]); for(i=0;i<2;i++) for(j=0;j<3;j++) c[i][j]=a[i][j]+b[i][j];
void display(int mult[][10], int rowFirst, int columnSecond); int main() { int firstMatrix[10][10], secondMatrix[10][10], mult[10][10], rowFirst, columnFirst, rowSecond, columnSecond, i, j, k; printf("Enter rows and column for first matrix: "); scanf("%d %d", &rowFirst, &columnFirst); printf("Enter rows and column for second matrix: "); scanf("%d %d", &rowSecond, &columnSecond); while (columnFirst != rowSecond) { printf("Error! column of first matrix not equal to row of second.\n"); printf("Enter rows and column for first matrix: "); scanf("%d%d", &rowFirst, &columnFirst); printf("Enter rows and column for second matrix: "); scanf("%d%d", &rowSecond, &columnSecond); } enterData(firstMatrix, secondMatrix, rowFirst, columnFirst, rowSecond, columnSecond); multiplyMatrices(firstMatrix, secondMatrix, mult, rowFirst, columnFirst, rowSecond, columnSecond); display(mult, rowFirst, columnSecond);
return 0; } void enterData(int firstMatrix[][10], int secondMatrix[][10], int rowFirst, int columnFirst, int rowSecond, int columnSecond) { int i, j; printf("\nEnter elements of matrix 1:\n"); for(i = 0; i < rowFirst; ++i) { for(j = 0; j < columnFirst; ++j) { printf("Enter elements a%d%d: ", i + 1, j + 1); scanf("%d", &firstMatrix[i][j]); } } printf("\nEnter elements of matrix 2:\n"); for(i = 0; i < rowSecond; ++i) { for(j = 0; j < columnSecond; ++j) { printf("Enter elements b%d%d: ", i + 1, j + 1); scanf("%d", &secondMatrix[i][j]); } }
void display(int mult[][10], int rowFirst, int columnSecond) { int i, j; printf("\nOutput Matrix:\n"); for(i = 0; i < rowFirst; ++i) { for(j = 0; j < columnSecond; ++j) { printf("%d ", mult[i][j]); if(j == columnSecond - 1) printf("\n\n"); } } } Output: Enter rows and column for first matrix: 3 2 Enter rows and column for second matrix: 3 2 Error! column of first matrix not equal to row of second. Enter rows and column for first matrix: 2 3 Enter rows and column for second matrix: 3 2 Enter elements of matrix 1: Enter elements a11: 3 Enter elements a12: - 2 Enter elements a13: 5 Enter elements a21: 3
Enter elements a22: 0 Enter elements a23: 4 Enter elements of matrix 2: Enter elements b11: 2 Enter elements b12: 3 Enter elements b21: - 9 Enter elements b22: 0 Enter elements b31: 0 Enter elements b32: 4 Output Matrix: 24 29 6 25 8.Write a C program to read a string and to find the number of digits, vowels, consonants and spaces #include #include int isVowel(char c); int isConsonant(char c); int isDigit(char c); int isWhitespace(char c);
} else { return 0; } } int isConsonant(char c) { if(((c>='a'&& c<='z') || (c>='A'&& c<='Z')) && !isVowel(c)){ return 1; } else { return 0; } } int isDigit(char c) { if(c>='0'&&c<='9'){ return 1; } else { return 0; } } int isWhitespace(char c) { if(c == ' '){ return 1; } else {
return 0; } } Output Enter a string: C is my 1st programming language Vowels: 8 Consonants: 18 Digits: 1 White spaces: 5 9.Write a C program to find reverse a string using pointer. #include int string_length(char); void reverse(char); main() { char string[100]; printf("Enter a string\n"); gets(string);
begin++; end--; } } int string_length(char *pointer) { int c = 0; while( *(pointer+c) != '\0' ) c++; return c; } Output: Enter a string: Yapph eb The reverse order of entered string is “Be Happy”. 10.Write a C program to swap two numbers using pointers. #include void swap(int *x,int *y) {
int t; t = *x; *x = *y; *y = t; } int main() { int num1,num2; printf("Enter value of num1: "); scanf("%d",&num1); printf("Enter value of num2: "); scanf("%d",&num2); printf("Before Swapping: num1 is: %d, num2 is: %d\n",num1,num2); swap(&num1,&num2); printf("After Swapping: num1 is: %d, num2 is: %d\n",num1,num2); return 0; } Output: Enter value of num1: 56 Enter value of num2: 67 Before swapping num1 is 56 and num2 is 67. After swapping num1 is 67 and num2 is 56.
Output: Enter details of students: Name: Mike Roll No : Percentage :89. Entered details: Name:Mike RollNo: 101 Percentage: 89. 12.Write a C program to demonstrate the difference between structure and union. #include #include struct struct_example { int integer; float decimal; char name[20]; }; union union_example { int integer; float decimal; char name[20]; };
void main() { struct struct_example stru ={5, 15, "John"}; union union_example uni = {5, 15, "John"}; printf("data of structure:\n integer: %d\n decimal: %.2f\n name: %s\n", stru.integer, stru.decimal, stru.name); printf("\ndata of union:\n integer: %d\n" "decimal: %.2f\n name: %s\n", uni.integer, uni.decimal, uni.name); printf("\nAccessing all members at a time:"); stru.integer = 163; stru.decimal = 75; strcpy(stru.name, "John"); printf("\ndata of structure:\n integer: %d\n " "decimal: %f\n name: %s\n", stru.integer, stru.decimal, stru.name); uni.integer = 163; uni.decimal = 75; strcpy(uni.name, "John"); printf("\ndata of union:\n integeer: %d\n " "decimal: %f\n name: %s\n", uni.integer, uni.decimal, uni.name); printf("\nAccessing one member at a time:"); printf("\ndata of structure:"); stru.integer = 140; stru.decimal = 150;
