Program 94: To find the first capital letter in a given string

Program 94: To find the first capital letter in a given string

#include<stdio.h>
#include<string.h>
main()
{
int i;
char str[100],c;
printf("Enter a string\n");
gets(str);

for(i=0;i<strlen(str);i++)
{
    if(str[i]>='A'&&str[i]<='Z')
    {
        c=str[i];
        break;
    }
    else
    {
        continue;
    }
}
printf("First capital letter of string %s is %c\n",str,c);

}

Explanation:

1. This program starts with initializing :
   • str→ To store input from user
   • i →Used as helping variable
   • c→ To store output first capital letter

2. printf("Enter a string\n");
   gets(str);

   To store string from user.For example str=hEllo 
3.  Main logic of program

   for(i=0;i<strlen(str);i++)
   {
       if(str[i]>='A'&&str[i]<='Z')
       {
           c=str[i];
           break;
       }
       else
       {
           continue;
       }
   }

   • Iteration 1: i=0 and 0<5 which is true so loop is executed
     • str[0]=h which doesn't lie in between capital A to Z so the if part won't execute
     • else part will be executed and the loop will continue to next iteration
     • i is incremented by 1 ,i=1
   • Iteration 2: i=1 and 1<5 which is true so loop is executed
     • str[1]=E which lie in between capital A to Z so the if part is executed
     • this letter E is stored in c,so c='E'

4. printf("First capital letter of string %s is %c\n",str,c);

   Finally First capital letter is printed which is E

 Output: