‘C’ program to calculate the sum of diagonal elements of matrix.

C File =>


/* Write a ‘C’ program to read a matrix and calculate the sum of its diagonal 
elements. */

#include<stdio.h>
int main() 
{
     int mat[30][30],sum=0,i,j,m,n;
 
     printf("\n Enter how many rows?");
     scanf("%d",&m);
     printf("\n Enter how many cols?");
     scanf("%d",&n);
 
     printf("\n Input matrix");
     for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
       {
           printf("\n Enter element %d%d",i+1,j+1);
          scanf("%d",&mat[i][j]);
        }
    }
 
    printf("\n\n Given matrix is\n");
    for(i=0;i<m;i++)
   {
      for(j=0;j<n;j++)
     {
        printf("%d\t",mat[i][j]);
        
        if(i==j)
           sum=sum+mat[i][j];
      }
      printf("\n");
    }
 
    printf("\n Sum of diagonal : %d",sum);
 
    return 0;
}

Comments

Post a Comment

Please do not enter any spam link in message.

Popular posts from this blog

Write a program to allocate memory dynamically for n integers. Accept the elements and calculate their sum and average

C File=> /* Write a program to allocate memory dynamically for n integers. Accept the elements and calculate their sum and average. */ #include<stdio.h> #include<stdlib.h> int main() {     int n,i,sum=0;     int *ptr;     float avg;     printf("\n Enter how many integers: ");     scanf("%d",&n);     ptr=(int*)malloc(n*sizeof(int));     for(i=0;i<n;i++)   {       printf("\n Enter number%d : ",i+1);       scanf("%d",&ptr[i]);       sum=sum+ptr[i];   }   avg=sum/n;   printf("\n Sum of numbers = %d\n",sum);   printf(" Average of numbers = %f",avg);   return 0 ; }
Read more

C program to accept names of n cities and search for city named “Pune”.

C File => /* Write a C program to accept names of n cities and search for city named “Pune” */ #include<stdio.h> #include<string.h> #include<stdlib.h> int main() {      int n,flag=0,i;      char str[50][50];      printf("\n Enter how many strings? ");      scanf("%d",&n);      for(i=0;i<n;i++)     {          printf("\n Enter String%d : ",i+1);          scanf("%s",str[i]);     }     for(i=0;i<n;i++)    {        if(strcmp(str[i],"Pune")==0)       {           flag=1;           break;        }    }    if(flag==1)       printf("\n Pune is found..");    else       printf("\n Pune NOT found..");    return 0; }
Read more