diff --git a/C/program-84/program.c b/C/program-84/program.c
new file mode 100644
index 0000000..914722d
--- /dev/null
+++ b/C/program-84/program.c
@@ -0,0 +1,16 @@
+#include<stdio.h>
+int main(){
+char str[100];
+int i=0;
+printf("Enter any string:");
+gets(str);
+//converting to uppercase
+while(str[i]!= '\0'){
+if(str[i]>=97&&str[i]<=122){
+ str[i]=str[i]-32;
+}
+i++;
+}
+printf("\nThe converted string is:%s", str);
+return 0;
+}