Write a C program to read a sentence and replace lowercase characters with uppercase and vice versa.

Question

Write a C program to read a sentence and replace lowercase characters with uppercase and vice versa.
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Solution 1

Sure, here is a simple C program that reads a sentence and replaces lowercase characters with uppercase and vice versa.

#include <stdio.h>

void convertCase(char *str) {
    int i = 0;
    while(str[i] != '\0') {
        if(str[i] >= 'a' && str[i] <= 'z') {
            str[i] = str[i] - 32;
  
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