Convert Lowercase to Uppercase using String in C

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This program is about converting a string from uppercase to lowercase using for loop and if conditions without using any predefine functions.

Source Code

#include<stdio.h>
int main()
{
  int i;
  char a[100];
  printf("\nEnter the First String:");
  gets(a);
  printf("\nGiven First String:");
  puts(a);
  for(i=0;a[i]!='\0';i++)
  {
    if(a[i]>=65&&a[i]<=90)
    {
       a[i]+=32;
    }
  }
  printf("\nLower case Value is:%s",a);
  return 0;
}

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Output

Enter the First String: TUTOR JOE'S
TUTOR JOE'S

Given First String:TUTOR JOE'S

Lower case Value is:tutor joe's

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• Basic Addition
• Data Types in C
• Variables and Literals in C
• Arithmetic Operator in C
• Example for Arithmetic Operator in C
• Assignment Operators in C Program
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Looping Statements in C

For Loop Example Programs

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String Example Programs in C

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Functions Example Programs in C

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