clangd of coc-nvim automatically adds words. How to stop it from doing so?

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What I type:

printf("%4dt%4dn", test, varr);

What I get upon saving:

printf(format: “%4dt%4dn”, fahr, cel);

I do not want the automatically added words in my code.

I tried editing the coc-settings.json 
it did not have any specifications for c when i opened it
i added this: 

“clangd.arguments”: [
“clangd.fallbackFlags”: [
“clangd.semanticHighlighting”: true,
“clangd.fileStatus”: true,
“clangd.trace”: “verbose”,
“clangd.formatting”: false, // Disable automatic formatting
“coc.preferences.formatOnSaveFiletypes”: [“c”, “cpp”],
“coc.preferences.formatOnType”: false

Sorry if this is a basic question. I'm new to vim.

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